could zap
Regular verb: zap - zapped- zapped

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could zap
you could zap
she could zap
we could zap
you could zap
they could zap 	I could be zapping
you could be zapping
she could be zapping
we could be zapping
you could be zapping
they could be zapping	I could have zapped
you could have zapped
she could have zapped
we could have zapped
you could have zapped
they could have zapped	I could have been zapping
you could have been zapping
she could have been zapping
we could have been zapping
you could have been zapping
they could have been zapping	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not zap
you could not zap
she could not zap
we could not zap
you could not zap
they could not zap 	I could not be zapping
you could not be zapping
she could not be zapping
we could not be zapping
you could not be zapping
they could not be zapping	I could not have zapped
you could not have zapped
she could not have zapped
we could not have zapped
you could not have zapped
they could not have zapped	I could not have been zapping
you could not have been zapping
she could not have been zapping
we could not have been zapping
you could not have been zapping
they could not have been zapping	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I zap?
could you zap?
could she zap?
could we zap?
could you zap?
could they zap? 	could I be zapping?
could you be zapping?
could she be zapping?
could we be zapping?
could you be zapping?
could they be zapping? 	could I have zapped?
could you have zapped?
could she have zapped?
could we have zapped?
could you have zapped?
could they have zapped? 	could I have been zapping?
could you have been zapping?
could she have been zapping?
could we have been zapping?
could you have been zapping?
could they have been zapping? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not zap?
could you not zap?
could she not zap?
could we not zap?
could you not zap?
could they not zap? 	could I not be zapping?
could you not be zapping?
could she not be zapping?
could we not be zapping?
could you not be zapping?
could they not be zapping? 	could I not have zapped?
could you not have zapped?
could she not have zapped?
could we not have zapped?
could you not have zapped?
could they not have zapped? 	could I not have been zapping?
could you not have been zapping?
could she not have been zapping?
could we not have been zapping?
could you not have been zapping?
could they not have been zapping?