English verb conjugation COULD SINGE

Regular verb: singe - singed - singed

Affirmation

Simple form

I could singe
you could singe
she could singe
we could singe
you could singe
they could singe

V-ing form

I could be singing
you could be singing
she could be singing
we could be singing
you could be singing
they could be singing

Perfect

I could have singed
you could have singed
she could have singed
we could have singed
you could have singed
they could have singed

V-ing perfect

I could have been singing
you could have been singing
she could have been singing
we could have been singing
you could have been singing
they could have been singing

Negation

Simple form

I could not singe
you could not singe
she could not singe
we could not singe
you could not singe
they could not singe

V-ing form

I could not be singing
you could not be singing
she could not be singing
we could not be singing
you could not be singing
they could not be singing

Perfect

I could not have singed
you could not have singed
she could not have singed
we could not have singed
you could not have singed
they could not have singed

V-ing perfect

I could not have been singing
you could not have been singing
she could not have been singing
we could not have been singing
you could not have been singing
they could not have been singing

Interrogative form

Simple form

could I singe?
could you singe?
could she singe?
could we singe?
could you singe?
could they singe?

V-ing form

could I be singing?
could you be singing?
could she be singing?
could we be singing?
could you be singing?
could they be singing?

Perfect

could I have singed?
could you have singed?
could she have singed?
could we have singed?
could you have singed?
could they have singed?

V-ing perfect

could I have been singing?
could you have been singing?
could she have been singing?
could we have been singing?
could you have been singing?
could they have been singing?

Interro-negative form

Simple form

could I not singe?
could you not singe?
could she not singe?
could we not singe?
could you not singe?
could they not singe?

V-ing form

could I not be singing?
could you not be singing?
could she not be singing?
could we not be singing?
could you not be singing?
could they not be singing?

Perfect

could I not have singed?
could you not have singed?
could she not have singed?
could we not have singed?
could you not have singed?
could they not have singed?

V-ing perfect

could I not have been singing?
could you not have been singing?
could she not have been singing?
could we not have been singing?
could you not have been singing?
could they not have been singing?

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