English verb conjugation
COULD SUGGEST

Regular verb: suggest - suggested - suggested

Affirmation

Simple form	V-ing form
I could suggest you could suggest she could suggest we could suggest you could suggest they could suggest	I could be suggesting you could be suggesting she could be suggesting we could be suggesting you could be suggesting they could be suggesting
Perfect	V-ing perfect
I could have suggested you could have suggested she could have suggested we could have suggested you could have suggested they could have suggested	I could have been suggesting you could have been suggesting she could have been suggesting we could have been suggesting you could have been suggesting they could have been suggesting

Negation

Simple form	V-ing form
I could not suggest you could not suggest she could not suggest we could not suggest you could not suggest they could not suggest	I could not be suggesting you could not be suggesting she could not be suggesting we could not be suggesting you could not be suggesting they could not be suggesting
Perfect	V-ing perfect
I could not have suggested you could not have suggested she could not have suggested we could not have suggested you could not have suggested they could not have suggested	I could not have been suggesting you could not have been suggesting she could not have been suggesting we could not have been suggesting you could not have been suggesting they could not have been suggesting

Interrogative form

Simple form	V-ing form
could I suggest? could you suggest? could she suggest? could we suggest? could you suggest? could they suggest?	could I be suggesting? could you be suggesting? could she be suggesting? could we be suggesting? could you be suggesting? could they be suggesting?
Perfect	V-ing perfect
could I have suggested? could you have suggested? could she have suggested? could we have suggested? could you have suggested? could they have suggested?	could I have been suggesting? could you have been suggesting? could she have been suggesting? could we have been suggesting? could you have been suggesting? could they have been suggesting?

Interro-negative form

Simple form	V-ing form
could I not suggest? could you not suggest? could she not suggest? could we not suggest? could you not suggest? could they not suggest?	could I not be suggesting? could you not be suggesting? could she not be suggesting? could we not be suggesting? could you not be suggesting? could they not be suggesting?
Perfect	V-ing perfect
could I not have suggested? could you not have suggested? could she not have suggested? could we not have suggested? could you not have suggested? could they not have suggested?	could I not have been suggesting? could you not have been suggesting? could she not have been suggesting? could we not have been suggesting? could you not have been suggesting? could they not have been suggesting?