English verb conjugation
COULD CANKER

Regular verb: canker - cankered - cankered

Affirmation

Simple form	V-ing form
I could canker you could canker he could canker we could canker you could canker they could canker	I could be cankering you could be cankering he could be cankering we could be cankering you could be cankering they could be cankering
Perfect	V-ing perfect
I could have cankered you could have cankered he could have cankered we could have cankered you could have cankered they could have cankered	I could have been cankering you could have been cankering he could have been cankering we could have been cankering you could have been cankering they could have been cankering

Negation

Simple form	V-ing form
I could not canker you could not canker he could not canker we could not canker you could not canker they could not canker	I could not be cankering you could not be cankering he could not be cankering we could not be cankering you could not be cankering they could not be cankering
Perfect	V-ing perfect
I could not have cankered you could not have cankered he could not have cankered we could not have cankered you could not have cankered they could not have cankered	I could not have been cankering you could not have been cankering he could not have been cankering we could not have been cankering you could not have been cankering they could not have been cankering

Interrogative form

Simple form	V-ing form
could I canker? could you canker? could he canker? could we canker? could you canker? could they canker?	could I be cankering? could you be cankering? could he be cankering? could we be cankering? could you be cankering? could they be cankering?
Perfect	V-ing perfect
could I have cankered? could you have cankered? could he have cankered? could we have cankered? could you have cankered? could they have cankered?	could I have been cankering? could you have been cankering? could he have been cankering? could we have been cankering? could you have been cankering? could they have been cankering?

Interro-negative form

Simple form	V-ing form
could I not canker? could you not canker? could he not canker? could we not canker? could you not canker? could they not canker?	could I not be cankering? could you not be cankering? could he not be cankering? could we not be cankering? could you not be cankering? could they not be cankering?
Perfect	V-ing perfect
could I not have cankered? could you not have cankered? could he not have cankered? could we not have cankered? could you not have cankered? could they not have cankered?	could I not have been cankering? could you not have been cankering? could he not have been cankering? could we not have been cankering? could you not have been cankering? could they not have been cankering?