English verb conjugation
COULD INCLUDE

Regular verb: include - included - included

Affirmation

Simple form	V-ing form
I could include you could include he could include we could include you could include they could include	I could be including you could be including he could be including we could be including you could be including they could be including
Perfect	V-ing perfect
I could have included you could have included he could have included we could have included you could have included they could have included	I could have been including you could have been including he could have been including we could have been including you could have been including they could have been including

Negation

Simple form	V-ing form
I couldn't include you couldn't include he couldn't include we couldn't include you couldn't include they couldn't include	I couldn't be including you couldn't be including he couldn't be including we couldn't be including you couldn't be including they couldn't be including
Perfect	V-ing perfect
I couldn't have included you couldn't have included he couldn't have included we couldn't have included you couldn't have included they couldn't have included	I couldn't have been including you couldn't have been including he couldn't have been including we couldn't have been including you couldn't have been including they couldn't have been including

Interrogative form

Simple form	V-ing form
could I include? could you include? could he include? could we include? could you include? could they include?	could I be including? could you be including? could he be including? could we be including? could you be including? could they be including?
Perfect	V-ing perfect
could I have included? could you have included? could he have included? could we have included? could you have included? could they have included?	could I have been including? could you have been including? could he have been including? could we have been including? could you have been including? could they have been including?

Interro-negative form

Simple form	V-ing form
couldn't I include? couldn't you include? couldn't he include? couldn't we include? couldn't you include? couldn't they include?	couldn't I be including? couldn't you be including? couldn't he be including? couldn't we be including? couldn't you be including? couldn't they be including?
Perfect	V-ing perfect
couldn't I have included? couldn't you have included? couldn't he have included? couldn't we have included? couldn't you have included? couldn't they have included?	couldn't I have been including? couldn't you have been including? couldn't he have been including? couldn't we have been including? couldn't you have been including? couldn't they have been including?