English verb conjugation COULD SIGNAL

Regular verb: signal - signalled - signalled

Affirmation

Simple form

I could signal
you could signal
he could signal
we could signal
you could signal
they could signal

V-ing form

I could be signalling
you could be signalling
he could be signalling
we could be signalling
you could be signalling
they could be signalling

Perfect

I could have signalled
you could have signalled
he could have signalled
we could have signalled
you could have signalled
they could have signalled

V-ing perfect

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

Negation

Simple form

I couldn't signal
you couldn't signal
he couldn't signal
we couldn't signal
you couldn't signal
they couldn't signal

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I signal?
could you signal?
could he signal?
could we signal?
could you signal?
could they signal?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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