English verb conjugation
COULD SWELTER

Regular verb: swelter - sweltered - sweltered

Affirmation

Simple form	V-ing form
I could swelter you could swelter he could swelter we could swelter you could swelter they could swelter	I could be sweltering you could be sweltering he could be sweltering we could be sweltering you could be sweltering they could be sweltering
Perfect	V-ing perfect
I could have sweltered you could have sweltered he could have sweltered we could have sweltered you could have sweltered they could have sweltered	I could have been sweltering you could have been sweltering he could have been sweltering we could have been sweltering you could have been sweltering they could have been sweltering

Negation

Simple form	V-ing form
I could not swelter you could not swelter he could not swelter we could not swelter you could not swelter they could not swelter	I could not be sweltering you could not be sweltering he could not be sweltering we could not be sweltering you could not be sweltering they could not be sweltering
Perfect	V-ing perfect
I could not have sweltered you could not have sweltered he could not have sweltered we could not have sweltered you could not have sweltered they could not have sweltered	I could not have been sweltering you could not have been sweltering he could not have been sweltering we could not have been sweltering you could not have been sweltering they could not have been sweltering

Interrogative form

Simple form	V-ing form
could I swelter? could you swelter? could he swelter? could we swelter? could you swelter? could they swelter?	could I be sweltering? could you be sweltering? could he be sweltering? could we be sweltering? could you be sweltering? could they be sweltering?
Perfect	V-ing perfect
could I have sweltered? could you have sweltered? could he have sweltered? could we have sweltered? could you have sweltered? could they have sweltered?	could I have been sweltering? could you have been sweltering? could he have been sweltering? could we have been sweltering? could you have been sweltering? could they have been sweltering?

Interro-negative form

Simple form	V-ing form
could I not swelter? could you not swelter? could he not swelter? could we not swelter? could you not swelter? could they not swelter?	could I not be sweltering? could you not be sweltering? could he not be sweltering? could we not be sweltering? could you not be sweltering? could they not be sweltering?
Perfect	V-ing perfect
could I not have sweltered? could you not have sweltered? could he not have sweltered? could we not have sweltered? could you not have sweltered? could they not have sweltered?	could I not have been sweltering? could you not have been sweltering? could he not have been sweltering? could we not have been sweltering? could you not have been sweltering? could they not have been sweltering?