English verb conjugation
COULD WRENCH

Regular verb: wrench - wrenched - wrenched

Affirmation

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