could replicate
Regular verb: replicate - replicated- replicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could replicate
you could replicate
she could replicate
we could replicate
you could replicate
they could replicate 	I could be replicating
you could be replicating
she could be replicating
we could be replicating
you could be replicating
they could be replicating	I could have replicated
you could have replicated
she could have replicated
we could have replicated
you could have replicated
they could have replicated	I could have been replicating
you could have been replicating
she could have been replicating
we could have been replicating
you could have been replicating
they could have been replicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't replicate
you couldn't replicate
she couldn't replicate
we couldn't replicate
you couldn't replicate
they couldn't replicate 	I couldn't be replicating
you couldn't be replicating
she couldn't be replicating
we couldn't be replicating
you couldn't be replicating
they couldn't be replicating	I couldn't have replicated
you couldn't have replicated
she couldn't have replicated
we couldn't have replicated
you couldn't have replicated
they couldn't have replicated	I couldn't have been replicating
you couldn't have been replicating
she couldn't have been replicating
we couldn't have been replicating
you couldn't have been replicating
they couldn't have been replicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I replicate?
could you replicate?
could she replicate?
could we replicate?
could you replicate?
could they replicate? 	could I be replicating?
could you be replicating?
could she be replicating?
could we be replicating?
could you be replicating?
could they be replicating? 	could I have replicated?
could you have replicated?
could she have replicated?
could we have replicated?
could you have replicated?
could they have replicated? 	could I have been replicating?
could you have been replicating?
could she have been replicating?
could we have been replicating?
could you have been replicating?
could they have been replicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I replicate?
couldn't you replicate?
couldn't she replicate?
couldn't we replicate?
couldn't you replicate?
couldn't they replicate? 	couldn't I be replicating?
couldn't you be replicating?
couldn't she be replicating?
couldn't we be replicating?
couldn't you be replicating?
couldn't they be replicating? 	couldn't I have replicated?
couldn't you have replicated?
couldn't she have replicated?
couldn't we have replicated?
couldn't you have replicated?
couldn't they have replicated? 	couldn't I have been replicating?
couldn't you have been replicating?
couldn't she have been replicating?
couldn't we have been replicating?
couldn't you have been replicating?
couldn't they have been replicating?