English verb conjugation COULD JAM

Regular verb: jam - jammed - jammed

Affirmation

Simple form

I could jam
you could jam
he could jam
we could jam
you could jam
they could jam

V-ing form

I could be jamming
you could be jamming
he could be jamming
we could be jamming
you could be jamming
they could be jamming

Perfect

I could have jammed
you could have jammed
he could have jammed
we could have jammed
you could have jammed
they could have jammed

V-ing perfect

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

Negation

Simple form

I could not jam
you could not jam
he could not jam
we could not jam
you could not jam
they could not jam

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I jam?
could you jam?
could he jam?
could we jam?
could you jam?
could they jam?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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