//infinitives
['he does what he can to stop', 'he did what he could to stop', 'he will do what he can to stop']
//passive
['cardboard is made of tree fibre', 'cardboard was made of tree fibre', 'cardboard will be made of tree fibre']
//grammatical-number
['we do what we can to stop', 'we did what we could to stop', 'we will do what we can to stop']
//middle-adverb
[`he quietly walked`, `he did not quietly walk`],
var str = 'men go';
var m = nlp(str).sentences().toPastTense().nouns().toSingular();
t.equal(m.out('normal'), 'a man went', str);
##conjugations
// coming => com // moving => mov // joking => jok // poking => pok // naming => nam // aching => ach // tuning => tun // bling => ble // hazing => haz // oozing => ooz // gazing => gaz // easing => eas // dozing => doz // raring => rar // honing => hon // fuming => fum // razing => raz
// lied => ly // shed => sh // owed => ow // aged => ag // aced => ac // axed => ax // egged => eg