can unclench
Regular verb: unclench - unclenched- unclenched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can unclench
you can unclench
he can unclench
we can unclench
you can unclench
they can unclench 	I can be unclenching
you can be unclenching
he can be unclenching
we can be unclenching
you can be unclenching
they can be unclenching	I can have unclenched
you can have unclenched
he can have unclenched
we can have unclenched
you can have unclenched
they can have unclenched	I can have been unclenching
you can have been unclenching
he can have been unclenching
we can have been unclenching
you can have been unclenching
they can have been unclenching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't unclench
you can't unclench
he can't unclench
we can't unclench
you can't unclench
they can't unclench 	I can't be unclenching
you can't be unclenching
he can't be unclenching
we can't be unclenching
you can't be unclenching
they can't be unclenching	I can't have unclenched
you can't have unclenched
he can't have unclenched
we can't have unclenched
you can't have unclenched
they can't have unclenched	I can't have been unclenching
you can't have been unclenching
he can't have been unclenching
we can't have been unclenching
you can't have been unclenching
they can't have been unclenching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I unclench?
can you unclench?
can he unclench?
can we unclench?
can you unclench?
can they unclench? 	can I be unclenching?
can you be unclenching?
can he be unclenching?
can we be unclenching?
can you be unclenching?
can they be unclenching? 	can I have unclenched?
can you have unclenched?
can he have unclenched?
can we have unclenched?
can you have unclenched?
can they have unclenched? 	can I have been unclenching?
can you have been unclenching?
can he have been unclenching?
can we have been unclenching?
can you have been unclenching?
can they have been unclenching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I unclench?
can't you unclench?
can't he unclench?
can't we unclench?
can't you unclench?
can't they unclench? 	can't I be unclenching?
can't you be unclenching?
can't he be unclenching?
can't we be unclenching?
can't you be unclenching?
can't they be unclenching? 	can't I have unclenched?
can't you have unclenched?
can't he have unclenched?
can't we have unclenched?
can't you have unclenched?
can't they have unclenched? 	can't I have been unclenching?
can't you have been unclenching?
can't he have been unclenching?
can't we have been unclenching?
can't you have been unclenching?
can't they have been unclenching?