English verb conjugation COULD DEVISE

Regular verb: devise - devised - devised

Affirmation

Simple form

I could devise
you could devise
he could devise
we could devise
you could devise
they could devise

V-ing form

I could be devising
you could be devising
he could be devising
we could be devising
you could be devising
they could be devising

Perfect

I could have devised
you could have devised
he could have devised
we could have devised
you could have devised
they could have devised

V-ing perfect

I could have been devising
you could have been devising
he could have been devising
we could have been devising
you could have been devising
they could have been devising

Negation

Simple form

I could not devise
you could not devise
he could not devise
we could not devise
you could not devise
they could not devise

V-ing form

I could not be devising
you could not be devising
he could not be devising
we could not be devising
you could not be devising
they could not be devising

Perfect

I could not have devised
you could not have devised
he could not have devised
we could not have devised
you could not have devised
they could not have devised

V-ing perfect

I could not have been devising
you could not have been devising
he could not have been devising
we could not have been devising
you could not have been devising
they could not have been devising

Interrogative form

Simple form

could I devise?
could you devise?
could he devise?
could we devise?
could you devise?
could they devise?

V-ing form

could I be devising?
could you be devising?
could he be devising?
could we be devising?
could you be devising?
could they be devising?

Perfect

could I have devised?
could you have devised?
could he have devised?
could we have devised?
could you have devised?
could they have devised?

V-ing perfect

could I have been devising?
could you have been devising?
could he have been devising?
could we have been devising?
could you have been devising?
could they have been devising?

Interro-negative form

Simple form

could I not devise?
could you not devise?
could he not devise?
could we not devise?
could you not devise?
could they not devise?

V-ing form

could I not be devising?
could you not be devising?
could he not be devising?
could we not be devising?
could you not be devising?
could they not be devising?

Perfect

could I not have devised?
could you not have devised?
could he not have devised?
could we not have devised?
could you not have devised?
could they not have devised?

V-ing perfect

could I not have been devising?
could you not have been devising?
could he not have been devising?
could we not have been devising?
could you not have been devising?
could they not have been devising?

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