can bench
Regular verb: bench - benched- benched

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can bench
you can bench
she can bench
we can bench
you can bench
they can bench 	I can be benching
you can be benching
she can be benching
we can be benching
you can be benching
they can be benching	I can have benched
you can have benched
she can have benched
we can have benched
you can have benched
they can have benched	I can have been benching
you can have been benching
she can have been benching
we can have been benching
you can have been benching
they can have been benching	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't bench
you can't bench
she can't bench
we can't bench
you can't bench
they can't bench 	I can't be benching
you can't be benching
she can't be benching
we can't be benching
you can't be benching
they can't be benching	I can't have benched
you can't have benched
she can't have benched
we can't have benched
you can't have benched
they can't have benched	I can't have been benching
you can't have been benching
she can't have been benching
we can't have been benching
you can't have been benching
they can't have been benching	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I bench?
can you bench?
can she bench?
can we bench?
can you bench?
can they bench? 	can I be benching?
can you be benching?
can she be benching?
can we be benching?
can you be benching?
can they be benching? 	can I have benched?
can you have benched?
can she have benched?
can we have benched?
can you have benched?
can they have benched? 	can I have been benching?
can you have been benching?
can she have been benching?
can we have been benching?
can you have been benching?
can they have been benching? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I bench?
can't you bench?
can't she bench?
can't we bench?
can't you bench?
can't they bench? 	can't I be benching?
can't you be benching?
can't she be benching?
can't we be benching?
can't you be benching?
can't they be benching? 	can't I have benched?
can't you have benched?
can't she have benched?
can't we have benched?
can't you have benched?
can't they have benched? 	can't I have been benching?
can't you have been benching?
can't she have been benching?
can't we have been benching?
can't you have been benching?
can't they have been benching?