Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could reply reply you could reply reply she could reply reply we could reply reply you could reply reply they could reply reply
V-ing form
I could be reply replying you could be reply replying she could be reply replying we could be reply replying you could be reply replying they could be reply replying
Perfect
I could have reply replied you could have reply replied she could have reply replied we could have reply replied you could have reply replied they could have reply replied
V-ing perfect
I could have been reply replying you could have been reply replying she could have been reply replying we could have been reply replying you could have been reply replying they could have been reply replying
Negation
Simple form
I could not reply reply you could not reply reply she could not reply reply we could not reply reply you could not reply reply they could not reply reply
V-ing form
I could not be reply replying you could not be reply replying she could not be reply replying we could not be reply replying you could not be reply replying they could not be reply replying
Perfect
I could not have reply replied you could not have reply replied she could not have reply replied we could not have reply replied you could not have reply replied they could not have reply replied
V-ing perfect
I could not have been reply replying you could not have been reply replying she could not have been reply replying we could not have been reply replying you could not have been reply replying they could not have been reply replying
Interrogative form
Simple form
could I reply reply? could you reply reply? could she reply reply? could we reply reply? could you reply reply? could they reply reply?
V-ing form
could I be reply replying? could you be reply replying? could she be reply replying? could we be reply replying? could you be reply replying? could they be reply replying?
Perfect
could I have reply replied? could you have reply replied? could she have reply replied? could we have reply replied? could you have reply replied? could they have reply replied?
V-ing perfect
could I have been reply replying? could you have been reply replying? could she have been reply replying? could we have been reply replying? could you have been reply replying? could they have been reply replying?
Interro-negative form
Simple form
could I not reply reply? could you not reply reply? could she not reply reply? could we not reply reply? could you not reply reply? could they not reply reply?
V-ing form
could I not be reply replying? could you not be reply replying? could she not be reply replying? could we not be reply replying? could you not be reply replying? could they not be reply replying?
Perfect
could I not have reply replied? could you not have reply replied? could she not have reply replied? could we not have reply replied? could you not have reply replied? could they not have reply replied?
V-ing perfect
could I not have been reply replying? could you not have been reply replying? could she not have been reply replying? could we not have been reply replying? could you not have been reply replying? could they not have been reply replying?