could blench
Regular verb: blench - blenched- blenched

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

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

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

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