English verb conjugation
COULD ANKYLOSE

Regular verb: ankylose - ankylosed - ankylosed

Affirmation

Simple form	V-ing form
I could ankylose you could ankylose she could ankylose we could ankylose you could ankylose they could ankylose	I could be ankylosing you could be ankylosing she could be ankylosing we could be ankylosing you could be ankylosing they could be ankylosing
Perfect	V-ing perfect
I could have ankylosed you could have ankylosed she could have ankylosed we could have ankylosed you could have ankylosed they could have ankylosed	I could have been ankylosing you could have been ankylosing she could have been ankylosing we could have been ankylosing you could have been ankylosing they could have been ankylosing

Negation

Simple form	V-ing form
I could not ankylose you could not ankylose she could not ankylose we could not ankylose you could not ankylose they could not ankylose	I could not be ankylosing you could not be ankylosing she could not be ankylosing we could not be ankylosing you could not be ankylosing they could not be ankylosing
Perfect	V-ing perfect
I could not have ankylosed you could not have ankylosed she could not have ankylosed we could not have ankylosed you could not have ankylosed they could not have ankylosed	I could not have been ankylosing you could not have been ankylosing she could not have been ankylosing we could not have been ankylosing you could not have been ankylosing they could not have been ankylosing

Interrogative form

Simple form	V-ing form
could I ankylose? could you ankylose? could she ankylose? could we ankylose? could you ankylose? could they ankylose?	could I be ankylosing? could you be ankylosing? could she be ankylosing? could we be ankylosing? could you be ankylosing? could they be ankylosing?
Perfect	V-ing perfect
could I have ankylosed? could you have ankylosed? could she have ankylosed? could we have ankylosed? could you have ankylosed? could they have ankylosed?	could I have been ankylosing? could you have been ankylosing? could she have been ankylosing? could we have been ankylosing? could you have been ankylosing? could they have been ankylosing?

Interro-negative form

Simple form	V-ing form
could I not ankylose? could you not ankylose? could she not ankylose? could we not ankylose? could you not ankylose? could they not ankylose?	could I not be ankylosing? could you not be ankylosing? could she not be ankylosing? could we not be ankylosing? could you not be ankylosing? could they not be ankylosing?
Perfect	V-ing perfect
could I not have ankylosed? could you not have ankylosed? could she not have ankylosed? could we not have ankylosed? could you not have ankylosed? could they not have ankylosed?	could I not have been ankylosing? could you not have been ankylosing? could she not have been ankylosing? could we not have been ankylosing? could you not have been ankylosing? could they not have been ankylosing?