could infix
Regular verb: infix - infixed- infixed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could infix
you could infix
she could infix
we could infix
you could infix
they could infix 	I could be infixing
you could be infixing
she could be infixing
we could be infixing
you could be infixing
they could be infixing	I could have infixed
you could have infixed
she could have infixed
we could have infixed
you could have infixed
they could have infixed	I could have been infixing
you could have been infixing
she could have been infixing
we could have been infixing
you could have been infixing
they could have been infixing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not infix
you could not infix
she could not infix
we could not infix
you could not infix
they could not infix 	I could not be infixing
you could not be infixing
she could not be infixing
we could not be infixing
you could not be infixing
they could not be infixing	I could not have infixed
you could not have infixed
she could not have infixed
we could not have infixed
you could not have infixed
they could not have infixed	I could not have been infixing
you could not have been infixing
she could not have been infixing
we could not have been infixing
you could not have been infixing
they could not have been infixing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I infix?
could you infix?
could she infix?
could we infix?
could you infix?
could they infix? 	could I be infixing?
could you be infixing?
could she be infixing?
could we be infixing?
could you be infixing?
could they be infixing? 	could I have infixed?
could you have infixed?
could she have infixed?
could we have infixed?
could you have infixed?
could they have infixed? 	could I have been infixing?
could you have been infixing?
could she have been infixing?
could we have been infixing?
could you have been infixing?
could they have been infixing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not infix?
could you not infix?
could she not infix?
could we not infix?
could you not infix?
could they not infix? 	could I not be infixing?
could you not be infixing?
could she not be infixing?
could we not be infixing?
could you not be infixing?
could they not be infixing? 	could I not have infixed?
could you not have infixed?
could she not have infixed?
could we not have infixed?
could you not have infixed?
could they not have infixed? 	could I not have been infixing?
could you not have been infixing?
could she not have been infixing?
could we not have been infixing?
could you not have been infixing?
could they not have been infixing?