English verb conjugation
COULD PIPET

Regular verb: pipet - pipeted - pipeted

Affirmation

Simple form	V-ing form
I could pipet you could pipet he could pipet we could pipet you could pipet they could pipet	I could be pipeting you could be pipeting he could be pipeting we could be pipeting you could be pipeting they could be pipeting
Perfect	V-ing perfect
I could have pipeted you could have pipeted he could have pipeted we could have pipeted you could have pipeted they could have pipeted	I could have been pipeting you could have been pipeting he could have been pipeting we could have been pipeting you could have been pipeting they could have been pipeting

Negation

Simple form	V-ing form
I could not pipet you could not pipet he could not pipet we could not pipet you could not pipet they could not pipet	I could not be pipeting you could not be pipeting he could not be pipeting we could not be pipeting you could not be pipeting they could not be pipeting
Perfect	V-ing perfect
I could not have pipeted you could not have pipeted he could not have pipeted we could not have pipeted you could not have pipeted they could not have pipeted	I could not have been pipeting you could not have been pipeting he could not have been pipeting we could not have been pipeting you could not have been pipeting they could not have been pipeting

Interrogative form

Simple form	V-ing form
could I pipet? could you pipet? could he pipet? could we pipet? could you pipet? could they pipet?	could I be pipeting? could you be pipeting? could he be pipeting? could we be pipeting? could you be pipeting? could they be pipeting?
Perfect	V-ing perfect
could I have pipeted? could you have pipeted? could he have pipeted? could we have pipeted? could you have pipeted? could they have pipeted?	could I have been pipeting? could you have been pipeting? could he have been pipeting? could we have been pipeting? could you have been pipeting? could they have been pipeting?

Interro-negative form

Simple form	V-ing form
could I not pipet? could you not pipet? could he not pipet? could we not pipet? could you not pipet? could they not pipet?	could I not be pipeting? could you not be pipeting? could he not be pipeting? could we not be pipeting? could you not be pipeting? could they not be pipeting?
Perfect	V-ing perfect
could I not have pipeted? could you not have pipeted? could he not have pipeted? could we not have pipeted? could you not have pipeted? could they not have pipeted?	could I not have been pipeting? could you not have been pipeting? could he not have been pipeting? could we not have been pipeting? could you not have been pipeting? could they not have been pipeting?