English verb conjugation COULD DESIGN

Regular verb: design - designed - designed

Affirmation

Simple form

I could design
you could design
he could design
we could design
you could design
they could design

V-ing form

I could be designing
you could be designing
he could be designing
we could be designing
you could be designing
they could be designing

Perfect

I could have designed
you could have designed
he could have designed
we could have designed
you could have designed
they could have designed

V-ing perfect

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

Negation

Simple form

I could not design
you could not design
he could not design
we could not design
you could not design
they could not design

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I design?
could you design?
could he design?
could we design?
could you design?
could they design?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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