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 couldn't jam
you couldn't jam
he couldn't jam
we couldn't jam
you couldn't jam
they couldn't jam

V-ing form

I couldn't be jamming
you couldn't be jamming
he couldn't be jamming
we couldn't be jamming
you couldn't be jamming
they couldn't be jamming

Perfect

I couldn't have jammed
you couldn't have jammed
he couldn't have jammed
we couldn't have jammed
you couldn't have jammed
they couldn't have jammed

V-ing perfect

I couldn't have been jamming
you couldn't have been jamming
he couldn't have been jamming
we couldn't have been jamming
you couldn't have been jamming
they couldn't 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

couldn't I jam?
couldn't you jam?
couldn't he jam?
couldn't we jam?
couldn't you jam?
couldn't they jam?

V-ing form

couldn't I be jamming?
couldn't you be jamming?
couldn't he be jamming?
couldn't we be jamming?
couldn't you be jamming?
couldn't they be jamming?

Perfect

couldn't I have jammed?
couldn't you have jammed?
couldn't he have jammed?
couldn't we have jammed?
couldn't you have jammed?
couldn't they have jammed?

V-ing perfect

couldn't I have been jamming?
couldn't you have been jamming?
couldn't he have been jamming?
couldn't we have been jamming?
couldn't you have been jamming?
couldn't they have been jamming?

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