English verb conjugation COULD ROOF

Regular verb: roof - roofed - roofed

Affirmation

Simple form

I could roof
you could roof
she could roof
we could roof
you could roof
they could roof

V-ing form

I could be roofing
you could be roofing
she could be roofing
we could be roofing
you could be roofing
they could be roofing

Perfect

I could have roofed
you could have roofed
she could have roofed
we could have roofed
you could have roofed
they could have roofed

V-ing perfect

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

Negation

Simple form

I could not roof
you could not roof
she could not roof
we could not roof
you could not roof
they could not roof

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I roof?
could you roof?
could she roof?
could we roof?
could you roof?
could they roof?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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