past tense and perfective aspect of 行う (okonau) [godan]

hypothetical and imperative forms of 行く (iku, yuku) [godan]

going

to go; to come to one's place / to (a letter) be delivered / to depart / to rely (on a method) / (年が～) to age / (うまく～) to go well / イく: (slang) to have an orgasm, to come, to cum

doses of medicine / gulps of tea / puffs of tobacco

clothes

clothing / an amount equal to one swallow (act of swallowing), a gulp / obey

school building

school (institution dedicated to teaching and learning)

everything