English verb conjugation
COULD SNIGGLE

Regular verb: sniggle - sniggled - sniggled

Affirmation

Simple form	V-ing form
I could sniggle you could sniggle he could sniggle we could sniggle you could sniggle they could sniggle	I could be sniggling you could be sniggling he could be sniggling we could be sniggling you could be sniggling they could be sniggling
Perfect	V-ing perfect
I could have sniggled you could have sniggled he could have sniggled we could have sniggled you could have sniggled they could have sniggled	I could have been sniggling you could have been sniggling he could have been sniggling we could have been sniggling you could have been sniggling they could have been sniggling

Negation

Simple form	V-ing form
I could not sniggle you could not sniggle he could not sniggle we could not sniggle you could not sniggle they could not sniggle	I could not be sniggling you could not be sniggling he could not be sniggling we could not be sniggling you could not be sniggling they could not be sniggling
Perfect	V-ing perfect
I could not have sniggled you could not have sniggled he could not have sniggled we could not have sniggled you could not have sniggled they could not have sniggled	I could not have been sniggling you could not have been sniggling he could not have been sniggling we could not have been sniggling you could not have been sniggling they could not have been sniggling

Interrogative form

Simple form	V-ing form
could I sniggle? could you sniggle? could he sniggle? could we sniggle? could you sniggle? could they sniggle?	could I be sniggling? could you be sniggling? could he be sniggling? could we be sniggling? could you be sniggling? could they be sniggling?
Perfect	V-ing perfect
could I have sniggled? could you have sniggled? could he have sniggled? could we have sniggled? could you have sniggled? could they have sniggled?	could I have been sniggling? could you have been sniggling? could he have been sniggling? could we have been sniggling? could you have been sniggling? could they have been sniggling?

Interro-negative form

Simple form	V-ing form
could I not sniggle? could you not sniggle? could he not sniggle? could we not sniggle? could you not sniggle? could they not sniggle?	could I not be sniggling? could you not be sniggling? could he not be sniggling? could we not be sniggling? could you not be sniggling? could they not be sniggling?
Perfect	V-ing perfect
could I not have sniggled? could you not have sniggled? could he not have sniggled? could we not have sniggled? could you not have sniggled? could they not have sniggled?	could I not have been sniggling? could you not have been sniggling? could he not have been sniggling? could we not have been sniggling? could you not have been sniggling? could they not have been sniggling?