English verb conjugation
COULD REPURIFY

Regular verb: repurify - repurified - repurified

Affirmation

Simple form	V-ing form
I could repurify you could repurify he could repurify we could repurify you could repurify they could repurify	I could be repurifying you could be repurifying he could be repurifying we could be repurifying you could be repurifying they could be repurifying
Perfect	V-ing perfect
I could have repurified you could have repurified he could have repurified we could have repurified you could have repurified they could have repurified	I could have been repurifying you could have been repurifying he could have been repurifying we could have been repurifying you could have been repurifying they could have been repurifying

Negation

Simple form	V-ing form
I could not repurify you could not repurify he could not repurify we could not repurify you could not repurify they could not repurify	I could not be repurifying you could not be repurifying he could not be repurifying we could not be repurifying you could not be repurifying they could not be repurifying
Perfect	V-ing perfect
I could not have repurified you could not have repurified he could not have repurified we could not have repurified you could not have repurified they could not have repurified	I could not have been repurifying you could not have been repurifying he could not have been repurifying we could not have been repurifying you could not have been repurifying they could not have been repurifying

Interrogative form

Simple form	V-ing form
could I repurify? could you repurify? could he repurify? could we repurify? could you repurify? could they repurify?	could I be repurifying? could you be repurifying? could he be repurifying? could we be repurifying? could you be repurifying? could they be repurifying?
Perfect	V-ing perfect
could I have repurified? could you have repurified? could he have repurified? could we have repurified? could you have repurified? could they have repurified?	could I have been repurifying? could you have been repurifying? could he have been repurifying? could we have been repurifying? could you have been repurifying? could they have been repurifying?

Interro-negative form

Simple form	V-ing form
could I not repurify? could you not repurify? could he not repurify? could we not repurify? could you not repurify? could they not repurify?	could I not be repurifying? could you not be repurifying? could he not be repurifying? could we not be repurifying? could you not be repurifying? could they not be repurifying?
Perfect	V-ing perfect
could I not have repurified? could you not have repurified? could he not have repurified? could we not have repurified? could you not have repurified? could they not have repurified?	could I not have been repurifying? could you not have been repurifying? could he not have been repurifying? could we not have been repurifying? could you not have been repurifying? could they not have been repurifying?