English verb conjugation
COULD EXCEPT

Regular verb: except - excepted - excepted

Affirmation

Simple form	V-ing form
I could except you could except he could except we could except you could except they could except	I could be excepting you could be excepting he 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 he 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 he 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 he 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 he 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 he 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 he 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 he except? could we except? could you except? could they except?	could I be excepting? could you be excepting? could he 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 he 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 he 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 he 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 he 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 he 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 he have been excepting? couldn't we have been excepting? couldn't you have been excepting? couldn't they have been excepting?