English verb conjugation COULD SUFFIX

Regular verb: suffix - suffixed - suffixed

Affirmation

Simple form

I could suffix
you could suffix
he could suffix
we could suffix
you could suffix
they could suffix

V-ing form

I could be suffixing
you could be suffixing
he could be suffixing
we could be suffixing
you could be suffixing
they could be suffixing

Perfect

I could have suffixed
you could have suffixed
he could have suffixed
we could have suffixed
you could have suffixed
they could have suffixed

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

could I suffix?
could you suffix?
could he suffix?
could we suffix?
could you suffix?
could they suffix?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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