diff --git a/src/19/enput.txt b/src/19/enput.txt
new file mode 100644
index 0000000..15d95db
--- /dev/null
+++ b/src/19/enput.txt
@@ -0,0 +1,2 @@
+116,244,147,186,100,85,10,91,96,17,94,96
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\ No newline at end of file
diff --git a/src/19/input.test.ts b/src/19/input.test.ts
new file mode 100644
index 0000000..08aca57
--- /dev/null
+++ b/src/19/input.test.ts
@@ -0,0 +1,14 @@
+import { assertEquals } from "@std/assert";
+import { main } from "./main.ts";
+
+const target = "input";
+
+Deno.test(`correct possible design count for ${target}`, async () => {
+  const result = await main(target);
+  assertEquals(result.possibleDesigns, 353);
+});
+
+Deno.test(`correct possible design combos for ${target}`, async () => {
+  const result = await main(target);
+  assertEquals(result.possibleDesignCombos, 880877787214477);
+});
diff --git a/src/19/main.ts b/src/19/main.ts
new file mode 100644
index 0000000..24926fc
--- /dev/null
+++ b/src/19/main.ts
@@ -0,0 +1,53 @@
+// { possibleDesigns: 353, possibleDesignCombos: 880877787214477 }
+// Elapsed: 133ms
+
+function testDesign(towels: string[], design: string): number {
+  const designCounter = new Array(design.length + 1).fill(0);
+  designCounter[0] = 1;
+  for (let i = 0; i <= design.length; i++) {
+    if (designCounter[i]) {
+      for (const towel of towels) {
+        if (
+          i + towel.length <= design.length &&
+          towel === design.slice(i, i + towel.length)
+        ) {
+          designCounter[i + towel.length] += designCounter[i];
+        }
+      }
+    }
+  }
+
+  return designCounter[design.length];
+}
+
+export async function main(target = "input") {
+  const dirpath = new URL(".", import.meta.url).pathname;
+  const text = await Deno.readTextFile(`${dirpath}${target}.txt`);
+
+  const { patterns, designs } = text.split("\n").reduce((agg, line) => {
+    if (line.match(/^[wubrg]+$/)) {
+      agg.designs.push(line);
+      return agg;
+    }
+
+    const towelsMatch = line.match(/^[wubrg, ]+$/);
+    if (towelsMatch) {
+      agg.patterns = towelsMatch[0].split(", ");
+    }
+
+    return agg;
+  }, { patterns: [] as string[], designs: [] as string[] });
+
+  return designs.reduce((agg, design) => {
+    const combos = testDesign(patterns, design);
+    agg.possibleDesigns += combos > 0 ? 1 : 0;
+    agg.possibleDesignCombos += combos;
+    return agg;
+  }, { possibleDesigns: 0, possibleDesignCombos: 0 });
+}
+
+if (import.meta.main) {
+  const startTime = performance.now();
+  console.log(await main());
+  console.log(`Elapsed: ${Math.round(performance.now() - startTime)}ms`);
+}
diff --git a/src/19/sample.txt b/src/19/sample.txt
new file mode 100644
index 0000000..29648be
--- /dev/null
+++ b/src/19/sample.txt
@@ -0,0 +1,10 @@
+r, wr, b, g, bwu, rb, gb, br
+
+brwrr
+bggr
+gbbr
+rrbgbr
+ubwu
+bwurrg
+brgr
+bbrgwb
diff --git a/src/19/test.ts b/src/19/test.ts
new file mode 100644
index 0000000..a0fc5dd
--- /dev/null
+++ b/src/19/test.ts
@@ -0,0 +1,14 @@
+import { assertEquals } from "@std/assert";
+import { main } from "./main.ts";
+
+const target = "sample";
+
+Deno.test(`correct possible design count for ${target}`, async () => {
+  const result = await main(target);
+  assertEquals(result.possibleDesigns, 6);
+});
+
+Deno.test(`correct possible design combos for ${target}`, async () => {
+  const result = await main(target);
+  assertEquals(result.possibleDesignCombos, 16);
+});