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 couldn't sniggle you couldn't sniggle he couldn't sniggle we couldn't sniggle you couldn't sniggle they couldn't sniggle	I couldn't be sniggling you couldn't be sniggling he couldn't be sniggling we couldn't be sniggling you couldn't be sniggling they couldn't be sniggling
Perfect	V-ing perfect
I couldn't have sniggled you couldn't have sniggled he couldn't have sniggled we couldn't have sniggled you couldn't have sniggled they couldn't have sniggled	I couldn't have been sniggling you couldn't have been sniggling he couldn't have been sniggling we couldn't have been sniggling you couldn't have been sniggling they couldn't 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
couldn't I sniggle? couldn't you sniggle? couldn't he sniggle? couldn't we sniggle? couldn't you sniggle? couldn't they sniggle?	couldn't I be sniggling? couldn't you be sniggling? couldn't he be sniggling? couldn't we be sniggling? couldn't you be sniggling? couldn't they be sniggling?
Perfect	V-ing perfect
couldn't I have sniggled? couldn't you have sniggled? couldn't he have sniggled? couldn't we have sniggled? couldn't you have sniggled? couldn't they have sniggled?	couldn't I have been sniggling? couldn't you have been sniggling? couldn't he have been sniggling? couldn't we have been sniggling? couldn't you have been sniggling? couldn't they have been sniggling?