English verb conjugation
COULD WELTER

Regular verb: welter - weltered - weltered

Affirmation

Simple form	V-ing form
I could welter you could welter he could welter we could welter you could welter they could welter	I could be weltering you could be weltering he could be weltering we could be weltering you could be weltering they could be weltering
Perfect	V-ing perfect
I could have weltered you could have weltered he could have weltered we could have weltered you could have weltered they could have weltered	I could have been weltering you could have been weltering he could have been weltering we could have been weltering you could have been weltering they could have been weltering

Negation

Simple form	V-ing form
I couldn't welter you couldn't welter he couldn't welter we couldn't welter you couldn't welter they couldn't welter	I couldn't be weltering you couldn't be weltering he couldn't be weltering we couldn't be weltering you couldn't be weltering they couldn't be weltering
Perfect	V-ing perfect
I couldn't have weltered you couldn't have weltered he couldn't have weltered we couldn't have weltered you couldn't have weltered they couldn't have weltered	I couldn't have been weltering you couldn't have been weltering he couldn't have been weltering we couldn't have been weltering you couldn't have been weltering they couldn't have been weltering

Interrogative form

Simple form	V-ing form
could I welter? could you welter? could he welter? could we welter? could you welter? could they welter?	could I be weltering? could you be weltering? could he be weltering? could we be weltering? could you be weltering? could they be weltering?
Perfect	V-ing perfect
could I have weltered? could you have weltered? could he have weltered? could we have weltered? could you have weltered? could they have weltered?	could I have been weltering? could you have been weltering? could he have been weltering? could we have been weltering? could you have been weltering? could they have been weltering?

Interro-negative form

Simple form	V-ing form
couldn't I welter? couldn't you welter? couldn't he welter? couldn't we welter? couldn't you welter? couldn't they welter?	couldn't I be weltering? couldn't you be weltering? couldn't he be weltering? couldn't we be weltering? couldn't you be weltering? couldn't they be weltering?
Perfect	V-ing perfect
couldn't I have weltered? couldn't you have weltered? couldn't he have weltered? couldn't we have weltered? couldn't you have weltered? couldn't they have weltered?	couldn't I have been weltering? couldn't you have been weltering? couldn't he have been weltering? couldn't we have been weltering? couldn't you have been weltering? couldn't they have been weltering?