could triplicate
Regular verb: triplicate - triplicated- triplicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could triplicate
you could triplicate
he could triplicate
we could triplicate
you could triplicate
they could triplicate 	I could be triplicating
you could be triplicating
he could be triplicating
we could be triplicating
you could be triplicating
they could be triplicating	I could have triplicated
you could have triplicated
he could have triplicated
we could have triplicated
you could have triplicated
they could have triplicated	I could have been triplicating
you could have been triplicating
he could have been triplicating
we could have been triplicating
you could have been triplicating
they could have been triplicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not triplicate
you could not triplicate
he could not triplicate
we could not triplicate
you could not triplicate
they could not triplicate 	I could not be triplicating
you could not be triplicating
he could not be triplicating
we could not be triplicating
you could not be triplicating
they could not be triplicating	I could not have triplicated
you could not have triplicated
he could not have triplicated
we could not have triplicated
you could not have triplicated
they could not have triplicated	I could not have been triplicating
you could not have been triplicating
he could not have been triplicating
we could not have been triplicating
you could not have been triplicating
they could not have been triplicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I triplicate?
could you triplicate?
could he triplicate?
could we triplicate?
could you triplicate?
could they triplicate? 	could I be triplicating?
could you be triplicating?
could he be triplicating?
could we be triplicating?
could you be triplicating?
could they be triplicating? 	could I have triplicated?
could you have triplicated?
could he have triplicated?
could we have triplicated?
could you have triplicated?
could they have triplicated? 	could I have been triplicating?
could you have been triplicating?
could he have been triplicating?
could we have been triplicating?
could you have been triplicating?
could they have been triplicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not triplicate?
could you not triplicate?
could he not triplicate?
could we not triplicate?
could you not triplicate?
could they not triplicate? 	could I not be triplicating?
could you not be triplicating?
could he not be triplicating?
could we not be triplicating?
could you not be triplicating?
could they not be triplicating? 	could I not have triplicated?
could you not have triplicated?
could he not have triplicated?
could we not have triplicated?
could you not have triplicated?
could they not have triplicated? 	could I not have been triplicating?
could you not have been triplicating?
could he not have been triplicating?
could we not have been triplicating?
could you not have been triplicating?
could they not have been triplicating?