English verb conjugation
COULD JIB

Regular verb: jib - jibbed - jibbed

Affirmation

Simple form	V-ing form
I could jib you could jib she could jib we could jib you could jib they could jib	I could be jibbing you could be jibbing she could be jibbing we could be jibbing you could be jibbing they could be jibbing
Perfect	V-ing perfect
I could have jibbed you could have jibbed she could have jibbed we could have jibbed you could have jibbed they could have jibbed	I could have been jibbing you could have been jibbing she could have been jibbing we could have been jibbing you could have been jibbing they could have been jibbing

Negation

Simple form	V-ing form
I could not jib you could not jib she could not jib we could not jib you could not jib they could not jib	I could not be jibbing you could not be jibbing she could not be jibbing we could not be jibbing you could not be jibbing they could not be jibbing
Perfect	V-ing perfect
I could not have jibbed you could not have jibbed she could not have jibbed we could not have jibbed you could not have jibbed they could not have jibbed	I could not have been jibbing you could not have been jibbing she could not have been jibbing we could not have been jibbing you could not have been jibbing they could not have been jibbing

Interrogative form

Simple form	V-ing form
could I jib? could you jib? could she jib? could we jib? could you jib? could they jib?	could I be jibbing? could you be jibbing? could she be jibbing? could we be jibbing? could you be jibbing? could they be jibbing?
Perfect	V-ing perfect
could I have jibbed? could you have jibbed? could she have jibbed? could we have jibbed? could you have jibbed? could they have jibbed?	could I have been jibbing? could you have been jibbing? could she have been jibbing? could we have been jibbing? could you have been jibbing? could they have been jibbing?

Interro-negative form

Simple form	V-ing form
could I not jib? could you not jib? could she not jib? could we not jib? could you not jib? could they not jib?	could I not be jibbing? could you not be jibbing? could she not be jibbing? could we not be jibbing? could you not be jibbing? could they not be jibbing?
Perfect	V-ing perfect
could I not have jibbed? could you not have jibbed? could she not have jibbed? could we not have jibbed? could you not have jibbed? could they not have jibbed?	could I not have been jibbing? could you not have been jibbing? could she not have been jibbing? could we not have been jibbing? could you not have been jibbing? could they not have been jibbing?