English verb conjugation
COULD WRENCH

Regular verb: wrench - wrenched - wrenched

Affirmation

Simple form	V-ing form
I could wrench you could wrench she could wrench we could wrench you could wrench they could wrench	I could be wrenching you could be wrenching she could be wrenching we could be wrenching you could be wrenching they could be wrenching
Perfect	V-ing perfect
I could have wrenched you could have wrenched she could have wrenched we could have wrenched you could have wrenched they could have wrenched	I could have been wrenching you could have been wrenching she could have been wrenching we could have been wrenching you could have been wrenching they could have been wrenching

Negation

Simple form	V-ing form
I couldn't wrench you couldn't wrench she couldn't wrench we couldn't wrench you couldn't wrench they couldn't wrench	I couldn't be wrenching you couldn't be wrenching she couldn't be wrenching we couldn't be wrenching you couldn't be wrenching they couldn't be wrenching
Perfect	V-ing perfect
I couldn't have wrenched you couldn't have wrenched she couldn't have wrenched we couldn't have wrenched you couldn't have wrenched they couldn't have wrenched	I couldn't have been wrenching you couldn't have been wrenching she couldn't have been wrenching we couldn't have been wrenching you couldn't have been wrenching they couldn't have been wrenching

Interrogative form

Simple form	V-ing form
could I wrench? could you wrench? could she wrench? could we wrench? could you wrench? could they wrench?	could I be wrenching? could you be wrenching? could she be wrenching? could we be wrenching? could you be wrenching? could they be wrenching?
Perfect	V-ing perfect
could I have wrenched? could you have wrenched? could she have wrenched? could we have wrenched? could you have wrenched? could they have wrenched?	could I have been wrenching? could you have been wrenching? could she have been wrenching? could we have been wrenching? could you have been wrenching? could they have been wrenching?

Interro-negative form

Simple form	V-ing form
couldn't I wrench? couldn't you wrench? couldn't she wrench? couldn't we wrench? couldn't you wrench? couldn't they wrench?	couldn't I be wrenching? couldn't you be wrenching? couldn't she be wrenching? couldn't we be wrenching? couldn't you be wrenching? couldn't they be wrenching?
Perfect	V-ing perfect
couldn't I have wrenched? couldn't you have wrenched? couldn't she have wrenched? couldn't we have wrenched? couldn't you have wrenched? couldn't they have wrenched?	couldn't I have been wrenching? couldn't you have been wrenching? couldn't she have been wrenching? couldn't we have been wrenching? couldn't you have been wrenching? couldn't they have been wrenching?