conjugate method
Verb
VBP -> Present
VBD -> Past
VBN -> Past Participle
VBS -> PresentS
VBG -> Gerund
'rallied'.conjugate('VBP'); // rally
'fly'.conjugate('VBD'); // flew
'throw'.conjugate('VBN'); // thrown
'rally'.conjugate('VBS'); // rallies
'die'.conjugate('VBG'); // dying
Implementation
String conjugate(String to) => _conjugate(trim().toLowerCase(), to);