English verb conjugation
COULD TINGLE

Regular verb: tingle - tingled - tingled

Affirmation

Simple form	V-ing form
I could tingle you could tingle he could tingle we could tingle you could tingle they could tingle	I could be tingling you could be tingling he could be tingling we could be tingling you could be tingling they could be tingling
Perfect	V-ing perfect
I could have tingled you could have tingled he could have tingled we could have tingled you could have tingled they could have tingled	I could have been tingling you could have been tingling he could have been tingling we could have been tingling you could have been tingling they could have been tingling

Negation

Simple form	V-ing form
I could not tingle you could not tingle he could not tingle we could not tingle you could not tingle they could not tingle	I could not be tingling you could not be tingling he could not be tingling we could not be tingling you could not be tingling they could not be tingling
Perfect	V-ing perfect
I could not have tingled you could not have tingled he could not have tingled we could not have tingled you could not have tingled they could not have tingled	I could not have been tingling you could not have been tingling he could not have been tingling we could not have been tingling you could not have been tingling they could not have been tingling

Interrogative form

Simple form	V-ing form
could I tingle? could you tingle? could he tingle? could we tingle? could you tingle? could they tingle?	could I be tingling? could you be tingling? could he be tingling? could we be tingling? could you be tingling? could they be tingling?
Perfect	V-ing perfect
could I have tingled? could you have tingled? could he have tingled? could we have tingled? could you have tingled? could they have tingled?	could I have been tingling? could you have been tingling? could he have been tingling? could we have been tingling? could you have been tingling? could they have been tingling?

Interro-negative form

Simple form	V-ing form
could I not tingle? could you not tingle? could he not tingle? could we not tingle? could you not tingle? could they not tingle?	could I not be tingling? could you not be tingling? could he not be tingling? could we not be tingling? could you not be tingling? could they not be tingling?
Perfect	V-ing perfect
could I not have tingled? could you not have tingled? could he not have tingled? could we not have tingled? could you not have tingled? could they not have tingled?	could I not have been tingling? could you not have been tingling? could he not have been tingling? could we not have been tingling? could you not have been tingling? could they not have been tingling?