English verb conjugation
COULD WRIGGLE

Regular verb: wriggle - wriggled - wriggled

Affirmation

Simple form	V-ing form
I could wriggle you could wriggle he could wriggle we could wriggle you could wriggle they could wriggle	I could be wriggling you could be wriggling he could be wriggling we could be wriggling you could be wriggling they could be wriggling
Perfect	V-ing perfect
I could have wriggled you could have wriggled he could have wriggled we could have wriggled you could have wriggled they could have wriggled	I could have been wriggling you could have been wriggling he could have been wriggling we could have been wriggling you could have been wriggling they could have been wriggling

Negation

Simple form	V-ing form
I couldn't wriggle you couldn't wriggle he couldn't wriggle we couldn't wriggle you couldn't wriggle they couldn't wriggle	I couldn't be wriggling you couldn't be wriggling he couldn't be wriggling we couldn't be wriggling you couldn't be wriggling they couldn't be wriggling
Perfect	V-ing perfect
I couldn't have wriggled you couldn't have wriggled he couldn't have wriggled we couldn't have wriggled you couldn't have wriggled they couldn't have wriggled	I couldn't have been wriggling you couldn't have been wriggling he couldn't have been wriggling we couldn't have been wriggling you couldn't have been wriggling they couldn't have been wriggling

Interrogative form

Simple form	V-ing form
could I wriggle? could you wriggle? could he wriggle? could we wriggle? could you wriggle? could they wriggle?	could I be wriggling? could you be wriggling? could he be wriggling? could we be wriggling? could you be wriggling? could they be wriggling?
Perfect	V-ing perfect
could I have wriggled? could you have wriggled? could he have wriggled? could we have wriggled? could you have wriggled? could they have wriggled?	could I have been wriggling? could you have been wriggling? could he have been wriggling? could we have been wriggling? could you have been wriggling? could they have been wriggling?

Interro-negative form

Simple form	V-ing form
couldn't I wriggle? couldn't you wriggle? couldn't he wriggle? couldn't we wriggle? couldn't you wriggle? couldn't they wriggle?	couldn't I be wriggling? couldn't you be wriggling? couldn't he be wriggling? couldn't we be wriggling? couldn't you be wriggling? couldn't they be wriggling?
Perfect	V-ing perfect
couldn't I have wriggled? couldn't you have wriggled? couldn't he have wriggled? couldn't we have wriggled? couldn't you have wriggled? couldn't they have wriggled?	couldn't I have been wriggling? couldn't you have been wriggling? couldn't he have been wriggling? couldn't we have been wriggling? couldn't you have been wriggling? couldn't they have been wriggling?