English verb conjugation
COULD SUPINATE

Regular verb: supinate - supinated - supinated

Affirmation

Simple form	V-ing form
I could supinate you could supinate he could supinate we could supinate you could supinate they could supinate	I could be supinating you could be supinating he could be supinating we could be supinating you could be supinating they could be supinating
Perfect	V-ing perfect
I could have supinated you could have supinated he could have supinated we could have supinated you could have supinated they could have supinated	I could have been supinating you could have been supinating he could have been supinating we could have been supinating you could have been supinating they could have been supinating

Negation

Simple form	V-ing form
I could not supinate you could not supinate he could not supinate we could not supinate you could not supinate they could not supinate	I could not be supinating you could not be supinating he could not be supinating we could not be supinating you could not be supinating they could not be supinating
Perfect	V-ing perfect
I could not have supinated you could not have supinated he could not have supinated we could not have supinated you could not have supinated they could not have supinated	I could not have been supinating you could not have been supinating he could not have been supinating we could not have been supinating you could not have been supinating they could not have been supinating

Interrogative form

Simple form	V-ing form
could I supinate? could you supinate? could he supinate? could we supinate? could you supinate? could they supinate?	could I be supinating? could you be supinating? could he be supinating? could we be supinating? could you be supinating? could they be supinating?
Perfect	V-ing perfect
could I have supinated? could you have supinated? could he have supinated? could we have supinated? could you have supinated? could they have supinated?	could I have been supinating? could you have been supinating? could he have been supinating? could we have been supinating? could you have been supinating? could they have been supinating?

Interro-negative form

Simple form	V-ing form
could I not supinate? could you not supinate? could he not supinate? could we not supinate? could you not supinate? could they not supinate?	could I not be supinating? could you not be supinating? could he not be supinating? could we not be supinating? could you not be supinating? could they not be supinating?
Perfect	V-ing perfect
could I not have supinated? could you not have supinated? could he not have supinated? could we not have supinated? could you not have supinated? could they not have supinated?	could I not have been supinating? could you not have been supinating? could he not have been supinating? could we not have been supinating? could you not have been supinating? could they not have been supinating?