must blench
Regular verb: blench - blenched- blenched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must blench
you must blench
he must blench
we must blench
you must blench
they must blench 	I must be blenching
you must be blenching
he must be blenching
we must be blenching
you must be blenching
they must be blenching	I must have blenched
you must have blenched
he must have blenched
we must have blenched
you must have blenched
they must have blenched	I must have been blenching
you must have been blenching
he must have been blenching
we must have been blenching
you must have been blenching
they must have been blenching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not blench
you must not blench
he must not blench
we must not blench
you must not blench
they must not blench 	I must not be blenching
you must not be blenching
he must not be blenching
we must not be blenching
you must not be blenching
they must not be blenching	I must not have blenched
you must not have blenched
he must not have blenched
we must not have blenched
you must not have blenched
they must not have blenched	I must not have been blenching
you must not have been blenching
he must not have been blenching
we must not have been blenching
you must not have been blenching
they must not have been blenching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I blench?
must you blench?
must he blench?
must we blench?
must you blench?
must they blench? 	must I be blenching?
must you be blenching?
must he be blenching?
must we be blenching?
must you be blenching?
must they be blenching? 	must I have blenched?
must you have blenched?
must he have blenched?
must we have blenched?
must you have blenched?
must they have blenched? 	must I have been blenching?
must you have been blenching?
must he have been blenching?
must we have been blenching?
must you have been blenching?
must they have been blenching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not blench?
must you not blench?
must he not blench?
must we not blench?
must you not blench?
must they not blench? 	must I not be blenching?
must you not be blenching?
must he not be blenching?
must we not be blenching?
must you not be blenching?
must they not be blenching? 	must I not have blenched?
must you not have blenched?
must he not have blenched?
must we not have blenched?
must you not have blenched?
must they not have blenched? 	must I not have been blenching?
must you not have been blenching?
must he not have been blenching?
must we not have been blenching?
must you not have been blenching?
must they not have been blenching?