English verb conjugation
COULD BENCH

Regular verb: bench - benched - benched

Affirmation

Simple form	V-ing form
I could bench you could bench she could bench we could bench you could bench they could bench	I could be benching you could be benching she could be benching we could be benching you could be benching they could be benching
Perfect	V-ing perfect
I could have benched you could have benched she could have benched we could have benched you could have benched they could have benched	I could have been benching you could have been benching she could have been benching we could have been benching you could have been benching they could have been benching

Negation

Simple form	V-ing form
I couldn't bench you couldn't bench she couldn't bench we couldn't bench you couldn't bench they couldn't bench	I couldn't be benching you couldn't be benching she couldn't be benching we couldn't be benching you couldn't be benching they couldn't be benching
Perfect	V-ing perfect
I couldn't have benched you couldn't have benched she couldn't have benched we couldn't have benched you couldn't have benched they couldn't have benched	I couldn't have been benching you couldn't have been benching she couldn't have been benching we couldn't have been benching you couldn't have been benching they couldn't have been benching

Interrogative form

Simple form	V-ing form
could I bench? could you bench? could she bench? could we bench? could you bench? could they bench?	could I be benching? could you be benching? could she be benching? could we be benching? could you be benching? could they be benching?
Perfect	V-ing perfect
could I have benched? could you have benched? could she have benched? could we have benched? could you have benched? could they have benched?	could I have been benching? could you have been benching? could she have been benching? could we have been benching? could you have been benching? could they have been benching?

Interro-negative form

Simple form	V-ing form
couldn't I bench? couldn't you bench? couldn't she bench? couldn't we bench? couldn't you bench? couldn't they bench?	couldn't I be benching? couldn't you be benching? couldn't she be benching? couldn't we be benching? couldn't you be benching? couldn't they be benching?
Perfect	V-ing perfect
couldn't I have benched? couldn't you have benched? couldn't she have benched? couldn't we have benched? couldn't you have benched? couldn't they have benched?	couldn't I have been benching? couldn't you have been benching? couldn't she have been benching? couldn't we have been benching? couldn't you have been benching? couldn't they have been benching?