should clench
Verbo regular: clench - clenched- clenched

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I'd clench
you'd clench
he'd clench
we'd clench
you'd clench
they'd clench 	I'd be clenching
you'd be clenching
he'd be clenching
we'd be clenching
you'd be clenching
they'd be clenching	I should've clenched
you should've clenched
he should've clenched
we should've clenched
you should've clenched
they should've clenched	I should've been clenching
you should've been clenching
he should've been clenching
we should've been clenching
you should've been clenching
they should've been clenching	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I shouldn't clench
you shouldn't clench
he shouldn't clench
we shouldn't clench
you shouldn't clench
they shouldn't clench 	I shouldn't be clenching
you shouldn't be clenching
he shouldn't be clenching
we shouldn't be clenching
you shouldn't be clenching
they shouldn't be clenching	I shouldn't have clenched
you shouldn't have clenched
he shouldn't have clenched
we shouldn't have clenched
you shouldn't have clenched
they shouldn't have clenched	I shouldn't have been clenching
you shouldn't have been clenching
he shouldn't have been clenching
we shouldn't have been clenching
you shouldn't have been clenching
they shouldn't have been clenching	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I clench?
should you clench?
should he clench?
should we clench?
should you clench?
should they clench? 	should I be clenching?
should you be clenching?
should he be clenching?
should we be clenching?
should you be clenching?
should they be clenching? 	should I have clenched?
should you have clenched?
should he have clenched?
should we have clenched?
should you have clenched?
should they have clenched? 	should I have been clenching?
should you have been clenching?
should he have been clenching?
should we have been clenching?
should you have been clenching?
should they have been clenching? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
shouldn't I clench?
shouldn't you clench?
shouldn't he clench?
shouldn't we clench?
shouldn't you clench?
shouldn't they clench? 	shouldn't I be clenching?
shouldn't you be clenching?
shouldn't he be clenching?
shouldn't we be clenching?
shouldn't you be clenching?
shouldn't they be clenching? 	shouldn't I have clenched?
shouldn't you have clenched?
shouldn't he have clenched?
shouldn't we have clenched?
shouldn't you have clenched?
shouldn't they have clenched? 	shouldn't I have been clenching?
shouldn't you have been clenching?
shouldn't he have been clenching?
shouldn't we have been clenching?
shouldn't you have been clenching?
shouldn't they have been clenching?