I could replicate you could replicate she could replicate we could replicate you could replicate they could replicate
V-ing form
I could be replicating you could be replicating she could be replicating we could be replicating you could be replicating they could be replicating
Perfect
I could have replicated you could have replicated she could have replicated we could have replicated you could have replicated they could have replicated
V-ing perfect
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
I could not replicate you could not replicate she could not replicate we could not replicate you could not replicate they could not replicate
V-ing form
I could not be replicating you could not be replicating she could not be replicating we could not be replicating you could not be replicating they could not be replicating
Perfect
I could not have replicated you could not have replicated she could not have replicated we could not have replicated you could not have replicated they could not have replicated
V-ing perfect
I could not have been replicating you could not have been replicating she could not have been replicating we could not have been replicating you could not have been replicating they could not have been replicating
Interrogative form
Simple form
could I replicate? could you replicate? could she replicate? could we replicate? could you replicate? could they replicate?
V-ing form
could I be replicating? could you be replicating? could she be replicating? could we be replicating? could you be replicating? could they be replicating?
Perfect
could I have replicated? could you have replicated? could she have replicated? could we have replicated? could you have replicated? could they have replicated?
V-ing perfect
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
could I not replicate? could you not replicate? could she not replicate? could we not replicate? could you not replicate? could they not replicate?
V-ing form
could I not be replicating? could you not be replicating? could she not be replicating? could we not be replicating? could you not be replicating? could they not be replicating?
Perfect
could I not have replicated? could you not have replicated? could she not have replicated? could we not have replicated? could you not have replicated? could they not have replicated?
V-ing perfect
could I not have been replicating? could you not have been replicating? could she not have been replicating? could we not have been replicating? could you not have been replicating? could they not have been replicating?