English verb conjugation
COULD GRIDLOCK

Regular verb: gridlock - gridlocked - gridlocked

Affirmation

Simple form	V-ing form
I could gridlock you could gridlock he could gridlock we could gridlock you could gridlock they could gridlock	I could be gridlocking you could be gridlocking he could be gridlocking we could be gridlocking you could be gridlocking they could be gridlocking
Perfect	V-ing perfect
I could have gridlocked you could have gridlocked he could have gridlocked we could have gridlocked you could have gridlocked they could have gridlocked	I could have been gridlocking you could have been gridlocking he could have been gridlocking we could have been gridlocking you could have been gridlocking they could have been gridlocking

Negation

Simple form	V-ing form
I couldn't gridlock you couldn't gridlock he couldn't gridlock we couldn't gridlock you couldn't gridlock they couldn't gridlock	I couldn't be gridlocking you couldn't be gridlocking he couldn't be gridlocking we couldn't be gridlocking you couldn't be gridlocking they couldn't be gridlocking
Perfect	V-ing perfect
I couldn't have gridlocked you couldn't have gridlocked he couldn't have gridlocked we couldn't have gridlocked you couldn't have gridlocked they couldn't have gridlocked	I couldn't have been gridlocking you couldn't have been gridlocking he couldn't have been gridlocking we couldn't have been gridlocking you couldn't have been gridlocking they couldn't have been gridlocking

Interrogative form

Simple form	V-ing form
could I gridlock? could you gridlock? could he gridlock? could we gridlock? could you gridlock? could they gridlock?	could I be gridlocking? could you be gridlocking? could he be gridlocking? could we be gridlocking? could you be gridlocking? could they be gridlocking?
Perfect	V-ing perfect
could I have gridlocked? could you have gridlocked? could he have gridlocked? could we have gridlocked? could you have gridlocked? could they have gridlocked?	could I have been gridlocking? could you have been gridlocking? could he have been gridlocking? could we have been gridlocking? could you have been gridlocking? could they have been gridlocking?

Interro-negative form

Simple form	V-ing form
couldn't I gridlock? couldn't you gridlock? couldn't he gridlock? couldn't we gridlock? couldn't you gridlock? couldn't they gridlock?	couldn't I be gridlocking? couldn't you be gridlocking? couldn't he be gridlocking? couldn't we be gridlocking? couldn't you be gridlocking? couldn't they be gridlocking?
Perfect	V-ing perfect
couldn't I have gridlocked? couldn't you have gridlocked? couldn't he have gridlocked? couldn't we have gridlocked? couldn't you have gridlocked? couldn't they have gridlocked?	couldn't I have been gridlocking? couldn't you have been gridlocking? couldn't he have been gridlocking? couldn't we have been gridlocking? couldn't you have been gridlocking? couldn't they have been gridlocking?