English verb conjugation
COULD INFIX

Regular verb: infix - infixed - infixed

Affirmation

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