English verb conjugation COULD ROIL

Regular verb: roil - roiled - roiled

Affirmation

Simple form

I could roil
you could roil
he could roil
we could roil
you could roil
they could roil

V-ing form

I could be roiling
you could be roiling
he could be roiling
we could be roiling
you could be roiling
they could be roiling

Perfect

I could have roiled
you could have roiled
he could have roiled
we could have roiled
you could have roiled
they could have roiled

V-ing perfect

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

Negation

Simple form

I could not roil
you could not roil
he could not roil
we could not roil
you could not roil
they could not roil

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I roil?
could you roil?
could he roil?
could we roil?
could you roil?
could they roil?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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