English verb conjugation
COULD PIPET

Regular verb: pipet - pipeted - pipeted

Affirmation

Simple form	V-ing form
I could pipet you could pipet she could pipet we could pipet you could pipet they could pipet	I could be pipeting you could be pipeting she 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 she 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 she 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 she 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 she 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 she 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 she 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 she pipet? could we pipet? could you pipet? could they pipet?	could I be pipeting? could you be pipeting? could she 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 she 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 she 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 she 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 she 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 she 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 she not have been pipeting? could we not have been pipeting? could you not have been pipeting? could they not have been pipeting?