English verb conjugation
COULD EXCEPT

Regular verb: except - excepted - excepted

Affirmation

Simple form	V-ing form
I could except you could except she could except we could except you could except they could except	I could be excepting you could be excepting she could be excepting we could be excepting you could be excepting they could be excepting
Perfect	V-ing perfect
I could have excepted you could have excepted she could have excepted we could have excepted you could have excepted they could have excepted	I could have been excepting you could have been excepting she could have been excepting we could have been excepting you could have been excepting they could have been excepting

Negation

Simple form	V-ing form
I couldn't except you couldn't except she couldn't except we couldn't except you couldn't except they couldn't except	I couldn't be excepting you couldn't be excepting she couldn't be excepting we couldn't be excepting you couldn't be excepting they couldn't be excepting
Perfect	V-ing perfect
I couldn't have excepted you couldn't have excepted she couldn't have excepted we couldn't have excepted you couldn't have excepted they couldn't have excepted	I couldn't have been excepting you couldn't have been excepting she couldn't have been excepting we couldn't have been excepting you couldn't have been excepting they couldn't have been excepting

Interrogative form

Simple form	V-ing form
could I except? could you except? could she except? could we except? could you except? could they except?	could I be excepting? could you be excepting? could she be excepting? could we be excepting? could you be excepting? could they be excepting?
Perfect	V-ing perfect
could I have excepted? could you have excepted? could she have excepted? could we have excepted? could you have excepted? could they have excepted?	could I have been excepting? could you have been excepting? could she have been excepting? could we have been excepting? could you have been excepting? could they have been excepting?

Interro-negative form

Simple form	V-ing form
couldn't I except? couldn't you except? couldn't she except? couldn't we except? couldn't you except? couldn't they except?	couldn't I be excepting? couldn't you be excepting? couldn't she be excepting? couldn't we be excepting? couldn't you be excepting? couldn't they be excepting?
Perfect	V-ing perfect
couldn't I have excepted? couldn't you have excepted? couldn't she have excepted? couldn't we have excepted? couldn't you have excepted? couldn't they have excepted?	couldn't I have been excepting? couldn't you have been excepting? couldn't she have been excepting? couldn't we have been excepting? couldn't you have been excepting? couldn't they have been excepting?