can quadruplicate
Regular verb: quadruplicate - quadruplicated- quadruplicated

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can quadruplicate
you can quadruplicate
she can quadruplicate
we can quadruplicate
you can quadruplicate
they can quadruplicate 	I can be quadruplicating
you can be quadruplicating
she can be quadruplicating
we can be quadruplicating
you can be quadruplicating
they can be quadruplicating	I can have quadruplicated
you can have quadruplicated
she can have quadruplicated
we can have quadruplicated
you can have quadruplicated
they can have quadruplicated	I can have been quadruplicating
you can have been quadruplicating
she can have been quadruplicating
we can have been quadruplicating
you can have been quadruplicating
they can have been quadruplicating	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can't quadruplicate
you can't quadruplicate
she can't quadruplicate
we can't quadruplicate
you can't quadruplicate
they can't quadruplicate 	I can't be quadruplicating
you can't be quadruplicating
she can't be quadruplicating
we can't be quadruplicating
you can't be quadruplicating
they can't be quadruplicating	I can't have quadruplicated
you can't have quadruplicated
she can't have quadruplicated
we can't have quadruplicated
you can't have quadruplicated
they can't have quadruplicated	I can't have been quadruplicating
you can't have been quadruplicating
she can't have been quadruplicating
we can't have been quadruplicating
you can't have been quadruplicating
they can't have been quadruplicating	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I quadruplicate?
can you quadruplicate?
can she quadruplicate?
can we quadruplicate?
can you quadruplicate?
can they quadruplicate? 	can I be quadruplicating?
can you be quadruplicating?
can she be quadruplicating?
can we be quadruplicating?
can you be quadruplicating?
can they be quadruplicating? 	can I have quadruplicated?
can you have quadruplicated?
can she have quadruplicated?
can we have quadruplicated?
can you have quadruplicated?
can they have quadruplicated? 	can I have been quadruplicating?
can you have been quadruplicating?
can she have been quadruplicating?
can we have been quadruplicating?
can you have been quadruplicating?
can they have been quadruplicating? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can't I quadruplicate?
can't you quadruplicate?
can't she quadruplicate?
can't we quadruplicate?
can't you quadruplicate?
can't they quadruplicate? 	can't I be quadruplicating?
can't you be quadruplicating?
can't she be quadruplicating?
can't we be quadruplicating?
can't you be quadruplicating?
can't they be quadruplicating? 	can't I have quadruplicated?
can't you have quadruplicated?
can't she have quadruplicated?
can't we have quadruplicated?
can't you have quadruplicated?
can't they have quadruplicated? 	can't I have been quadruplicating?
can't you have been quadruplicating?
can't she have been quadruplicating?
can't we have been quadruplicating?
can't you have been quadruplicating?
can't they have been quadruplicating?