English verb conjugation
COULD BOGGLE

Regular verb: boggle - boggled - boggled

Affirmation

Simple form	V-ing form
I could boggle you could boggle he could boggle we could boggle you could boggle they could boggle	I could be boggling you could be boggling he could be boggling we could be boggling you could be boggling they could be boggling
Perfect	V-ing perfect
I could have boggled you could have boggled he could have boggled we could have boggled you could have boggled they could have boggled	I could have been boggling you could have been boggling he could have been boggling we could have been boggling you could have been boggling they could have been boggling

Negation

Simple form	V-ing form
I couldn't boggle you couldn't boggle he couldn't boggle we couldn't boggle you couldn't boggle they couldn't boggle	I couldn't be boggling you couldn't be boggling he couldn't be boggling we couldn't be boggling you couldn't be boggling they couldn't be boggling
Perfect	V-ing perfect
I couldn't have boggled you couldn't have boggled he couldn't have boggled we couldn't have boggled you couldn't have boggled they couldn't have boggled	I couldn't have been boggling you couldn't have been boggling he couldn't have been boggling we couldn't have been boggling you couldn't have been boggling they couldn't have been boggling

Interrogative form

Simple form	V-ing form
could I boggle? could you boggle? could he boggle? could we boggle? could you boggle? could they boggle?	could I be boggling? could you be boggling? could he be boggling? could we be boggling? could you be boggling? could they be boggling?
Perfect	V-ing perfect
could I have boggled? could you have boggled? could he have boggled? could we have boggled? could you have boggled? could they have boggled?	could I have been boggling? could you have been boggling? could he have been boggling? could we have been boggling? could you have been boggling? could they have been boggling?

Interro-negative form

Simple form	V-ing form
couldn't I boggle? couldn't you boggle? couldn't he boggle? couldn't we boggle? couldn't you boggle? couldn't they boggle?	couldn't I be boggling? couldn't you be boggling? couldn't he be boggling? couldn't we be boggling? couldn't you be boggling? couldn't they be boggling?
Perfect	V-ing perfect
couldn't I have boggled? couldn't you have boggled? couldn't he have boggled? couldn't we have boggled? couldn't you have boggled? couldn't they have boggled?	couldn't I have been boggling? couldn't you have been boggling? couldn't he have been boggling? couldn't we have been boggling? couldn't you have been boggling? couldn't they have been boggling?