must wrench
Regular verb: wrench - wrenched- wrenched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must wrench
you must wrench
he must wrench
we must wrench
you must wrench
they must wrench 	I must be wrenching
you must be wrenching
he must be wrenching
we must be wrenching
you must be wrenching
they must be wrenching	I must have wrenched
you must have wrenched
he must have wrenched
we must have wrenched
you must have wrenched
they must have wrenched	I must have been wrenching
you must have been wrenching
he must have been wrenching
we must have been wrenching
you must have been wrenching
they must have been wrenching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not wrench
you must not wrench
he must not wrench
we must not wrench
you must not wrench
they must not wrench 	I must not be wrenching
you must not be wrenching
he must not be wrenching
we must not be wrenching
you must not be wrenching
they must not be wrenching	I must not have wrenched
you must not have wrenched
he must not have wrenched
we must not have wrenched
you must not have wrenched
they must not have wrenched	I must not have been wrenching
you must not have been wrenching
he must not have been wrenching
we must not have been wrenching
you must not have been wrenching
they must not have been wrenching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I wrench?
must you wrench?
must he wrench?
must we wrench?
must you wrench?
must they wrench? 	must I be wrenching?
must you be wrenching?
must he be wrenching?
must we be wrenching?
must you be wrenching?
must they be wrenching? 	must I have wrenched?
must you have wrenched?
must he have wrenched?
must we have wrenched?
must you have wrenched?
must they have wrenched? 	must I have been wrenching?
must you have been wrenching?
must he have been wrenching?
must we have been wrenching?
must you have been wrenching?
must they have been wrenching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not wrench?
must you not wrench?
must he not wrench?
must we not wrench?
must you not wrench?
must they not wrench? 	must I not be wrenching?
must you not be wrenching?
must he not be wrenching?
must we not be wrenching?
must you not be wrenching?
must they not be wrenching? 	must I not have wrenched?
must you not have wrenched?
must he not have wrenched?
must we not have wrenched?
must you not have wrenched?
must they not have wrenched? 	must I not have been wrenching?
must you not have been wrenching?
must he not have been wrenching?
must we not have been wrenching?
must you not have been wrenching?
must they not have been wrenching?