could reduplicate
Regular verb: reduplicate - reduplicated- reduplicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could reduplicate
you could reduplicate
she could reduplicate
we could reduplicate
you could reduplicate
they could reduplicate 	I could be reduplicating
you could be reduplicating
she could be reduplicating
we could be reduplicating
you could be reduplicating
they could be reduplicating	I could have reduplicated
you could have reduplicated
she could have reduplicated
we could have reduplicated
you could have reduplicated
they could have reduplicated	I could have been reduplicating
you could have been reduplicating
she could have been reduplicating
we could have been reduplicating
you could have been reduplicating
they could have been reduplicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't reduplicate
you couldn't reduplicate
she couldn't reduplicate
we couldn't reduplicate
you couldn't reduplicate
they couldn't reduplicate 	I couldn't be reduplicating
you couldn't be reduplicating
she couldn't be reduplicating
we couldn't be reduplicating
you couldn't be reduplicating
they couldn't be reduplicating	I couldn't have reduplicated
you couldn't have reduplicated
she couldn't have reduplicated
we couldn't have reduplicated
you couldn't have reduplicated
they couldn't have reduplicated	I couldn't have been reduplicating
you couldn't have been reduplicating
she couldn't have been reduplicating
we couldn't have been reduplicating
you couldn't have been reduplicating
they couldn't have been reduplicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I reduplicate?
could you reduplicate?
could she reduplicate?
could we reduplicate?
could you reduplicate?
could they reduplicate? 	could I be reduplicating?
could you be reduplicating?
could she be reduplicating?
could we be reduplicating?
could you be reduplicating?
could they be reduplicating? 	could I have reduplicated?
could you have reduplicated?
could she have reduplicated?
could we have reduplicated?
could you have reduplicated?
could they have reduplicated? 	could I have been reduplicating?
could you have been reduplicating?
could she have been reduplicating?
could we have been reduplicating?
could you have been reduplicating?
could they have been reduplicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I reduplicate?
couldn't you reduplicate?
couldn't she reduplicate?
couldn't we reduplicate?
couldn't you reduplicate?
couldn't they reduplicate? 	couldn't I be reduplicating?
couldn't you be reduplicating?
couldn't she be reduplicating?
couldn't we be reduplicating?
couldn't you be reduplicating?
couldn't they be reduplicating? 	couldn't I have reduplicated?
couldn't you have reduplicated?
couldn't she have reduplicated?
couldn't we have reduplicated?
couldn't you have reduplicated?
couldn't they have reduplicated? 	couldn't I have been reduplicating?
couldn't you have been reduplicating?
couldn't she have been reduplicating?
couldn't we have been reduplicating?
couldn't you have been reduplicating?
couldn't they have been reduplicating?