English verb conjugation
COULD COMPUTE

Regular verb: compute - computed - computed

Affirmation

Simple form	V-ing form
I could compute you could compute she could compute we could compute you could compute they could compute	I could be computing you could be computing she could be computing we could be computing you could be computing they could be computing
Perfect	V-ing perfect
I could have computed you could have computed she could have computed we could have computed you could have computed they could have computed	I could have been computing you could have been computing she could have been computing we could have been computing you could have been computing they could have been computing

Negation

Simple form	V-ing form
I couldn't compute you couldn't compute she couldn't compute we couldn't compute you couldn't compute they couldn't compute	I couldn't be computing you couldn't be computing she couldn't be computing we couldn't be computing you couldn't be computing they couldn't be computing
Perfect	V-ing perfect
I couldn't have computed you couldn't have computed she couldn't have computed we couldn't have computed you couldn't have computed they couldn't have computed	I couldn't have been computing you couldn't have been computing she couldn't have been computing we couldn't have been computing you couldn't have been computing they couldn't have been computing

Interrogative form

Simple form	V-ing form
could I compute? could you compute? could she compute? could we compute? could you compute? could they compute?	could I be computing? could you be computing? could she be computing? could we be computing? could you be computing? could they be computing?
Perfect	V-ing perfect
could I have computed? could you have computed? could she have computed? could we have computed? could you have computed? could they have computed?	could I have been computing? could you have been computing? could she have been computing? could we have been computing? could you have been computing? could they have been computing?

Interro-negative form

Simple form	V-ing form
couldn't I compute? couldn't you compute? couldn't she compute? couldn't we compute? couldn't you compute? couldn't they compute?	couldn't I be computing? couldn't you be computing? couldn't she be computing? couldn't we be computing? couldn't you be computing? couldn't they be computing?
Perfect	V-ing perfect
couldn't I have computed? couldn't you have computed? couldn't she have computed? couldn't we have computed? couldn't you have computed? couldn't they have computed?	couldn't I have been computing? couldn't you have been computing? couldn't she have been computing? couldn't we have been computing? couldn't you have been computing? couldn't they have been computing?