diff --git a/common/casing/sgs.xml b/common/casing/sgs.xml
new file mode 100644
index 00000000000..2ba708dea48
--- /dev/null
+++ b/common/casing/sgs.xml
@@ -0,0 +1,36 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE ldml SYSTEM "../../common/dtd/ldml.dtd">
+<!-- Copyright © 1991-2024 Unicode, Inc.
+CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/)
+For terms of use, see http://www.unicode.org/copyright.html
+-->
+<ldml>
+	<identity>
+		<version number="$Revision$"/>
+		<language type="sgs"/>
+	</identity>
+	<metadata>
+		<casingData>
+			<casingItem type="calendar_field">lowercase</casingItem>
+			<casingItem type="currencyName">titlecase</casingItem>
+			<casingItem type="currencyName_count">titlecase</casingItem>
+			<casingItem type="day_narrow">titlecase</casingItem>
+			<casingItem type="era_abbr">titlecase</casingItem>
+			<casingItem type="era_name">titlecase</casingItem>
+			<casingItem type="era_narrow">titlecase</casingItem>
+			<casingItem type="language">lowercase</casingItem>
+			<casingItem type="metazone_long">titlecase</casingItem>
+			<casingItem type="month_format_except_narrow">titlecase</casingItem>
+			<casingItem type="month_standalone_except_narrow">titlecase</casingItem>
+			<casingItem type="quarter_abbreviated">titlecase</casingItem>
+			<casingItem type="quarter_format_wide">titlecase</casingItem>
+			<casingItem type="quarter_standalone_wide">titlecase</casingItem>
+			<casingItem type="relative">lowercase</casingItem>
+			<casingItem type="script">lowercase</casingItem>
+			<casingItem type="territory">titlecase</casingItem>
+			<casingItem type="variant">titlecase</casingItem>
+			<casingItem type="zone_exemplarCity">titlecase</casingItem>
+			<casingItem type="zone_long">titlecase</casingItem>
+		</casingData>
+	</metadata>
+</ldml>
diff --git a/common/collation/sgs.xml b/common/collation/sgs.xml
new file mode 100644
index 00000000000..55cc7800712
--- /dev/null
+++ b/common/collation/sgs.xml
@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE ldml SYSTEM "../../common/dtd/ldml.dtd">
+<!--
+Copyright © 1991-2024 Unicode, Inc.
+CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/)
+For terms of use, see http://www.unicode.org/copyright.html
+-->
+<ldml>
+	<identity>
+		<version number="$Revision$" />
+		<language type="sgs" /> 
+	</identity>
+    <collations>
+        <collation type="standard" references="Juozas Pabrėža: Žemaičių kalba ir rašyba ISBN 978-609-8179-10-1">
+            <cr><![CDATA[
+                &A<ā<<ā<<<Ā<<Ā
+                &C<č<<<Č
+                &E<ē<<ē<<<Ē<<Ē<ė<<<Ė<ė̄<<<Ė̄
+                &I<ī<<ī<<<Ī<<Ī
+                &O<ō<<ō<<<Ō<<Ō
+                &S<š<<<Š
+                &U<ū<<ū<<<Ū<<Ū
+                &Z<ž<<<Ž
+            ]]></cr>
+        </collation>
+    </collations>
+</ldml>
+
+<!--
+There are ideas to add more letters but untill it is not official it would be skipped.
+These letters are: ëůéóêȧǡ
+-->
diff --git a/common/main/sgs.xml b/common/main/sgs.xml
new file mode 100644
index 00000000000..064b2e55d56
--- /dev/null
+++ b/common/main/sgs.xml
@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE ldml SYSTEM "../../common/dtd/ldml.dtd">
+<!-- Copyright © 1991-2024 Unicode, Inc.
+For terms of use, see http://www.unicode.org/copyright.html
+SPDX-License-Identifier: Unicode-DFS-2016
+CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/)
+
+Warnings: All cp values have U+FE0F characters removed. See /annotationsDerived/ for derived annotations.
+-->
+<ldml>
+	<identity>
+		<version number="$Revision$"/>
+		<language type="sgs"/>
+	</identity>
+	<characters>
+        <exemplarCharacters>[aā b c č d eē ė{ė\u0304} f g h iī j k l m n oō p r s š t uū v z ž]</exemplarCharacters>
+        <exemplarCharacters type="auxiliary">[{a\u0304} {ch} {dz} {dž} {e\u0304} {i\u0304} {o\u0304} {u\u0304}]</exemplarCharacters>
+        <exemplarCharacters type="index">[AĀ B C Č D EĒ Ė{Ė\u0304} F G H IĪ J K L M N OŌ P R S Š T UŪ V Z Ž]</exemplarCharacters>
+		<exemplarCharacters type="numbers">[  , % ‰ + − 0 1 2 3 4 5 6 7 8 9]</exemplarCharacters>
+		<exemplarCharacters type="punctuation">[\- ‐‑ – — , ; \: ! ? . … “„ ( ) \[ \] \{ \}]</exemplarCharacters>
+	</characters>
+	<delimiters>
+		<quotationStart>„</quotationStart>
+		<quotationEnd>“</quotationEnd>
+		<alternateQuotationStart>„</alternateQuotationStart>
+		<alternateQuotationEnd>“</alternateQuotationEnd>
+	</delimiters>
+	<posix>
+		<messages>
+            <yesstr>tēp:t</yesstr>
+			<nostr>nē:n</nostr>
+		</messages>
+	</posix>
+</ldml>
diff --git a/common/main/sgs_LT.xml b/common/main/sgs_LT.xml
new file mode 100644
index 00000000000..a8034f5f774
--- /dev/null
+++ b/common/main/sgs_LT.xml
@@ -0,0 +1,14 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE ldml SYSTEM "../../common/dtd/ldml.dtd">
+<!-- Copyright © 1991-2024 Unicode, Inc.
+For terms of use, see http://www.unicode.org/copyright.html
+SPDX-License-Identifier: Unicode-DFS-2016
+CLDR data files are interpreted according to the LDML specification (http://unicode.org/reports/tr35/)
+-->
+<ldml>
+	<identity>
+		<version number="$Revision$"/>
+		<language type="sgs"/>
+		<territory type="LT"/>
+	</identity>
+</ldml>
diff --git a/common/supplemental/plurals.xml b/common/supplemental/plurals.xml
index 9b1100a2832..13417062e71 100644
--- a/common/supplemental/plurals.xml
+++ b/common/supplemental/plurals.xml
@@ -225,6 +225,13 @@ CLDR data files are interpreted according to the LDML specification (http://unic
             <pluralRule count="many">v != 0   @decimal 0.0~1.5, 10.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …</pluralRule>
             <pluralRule count="other"> @integer 3~10, 13~19, 23, 103, 1003, …</pluralRule>
         </pluralRules>
+        <pluralRules locales="sgs">
+            <pluralRule count="one">n % 10 = 1 and n % 100 != 11 @integer 1, 21, 31, 41, 51, 61, 71, 81, 101, 1001, … @decimal 1.0, 21.0, 31.0, 41.0, 51.0, 61.0, 71.0, 81.0, 101.0, 1001.0, …</pluralRule>
+            <pluralRule count="two">n = 2 @integer 2 @decimal 2.0 </pluralRule>
+            <pluralRule count="few">n != 2 and n % 10 = 2..9 and n % 100 != 11..19 @integer 3~9, 22~29, 102, 1002, … @decimal 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 22.0, 102.0, 1002.0, …</pluralRule>
+            <pluralRule count="many">f != 0  @decimal 0.1~0.9, 1.1~1.7, 10.1, 100.1, 1000.1, …</pluralRule>
+            <pluralRule count="other"> @integer 0, 10~20, 30, 40, 50, 60, 100, 1000, 10000, 100000, 1000000, … @decimal 0.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 100.0, 1000.0, 10000.0, 100000.0, 1000000.0, …</pluralRule>
+        </pluralRules>
 
         <!-- 6: zero,one,two,few,many,other -->