English verb conjugation
COULD GRIDLOCK

Regular verb: gridlock - gridlocked - gridlocked

Affirmation

Simple form	V-ing form
I could gridlock you could gridlock she could gridlock we could gridlock you could gridlock they could gridlock	I could be gridlocking you could be gridlocking she 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 she 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 she 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 she 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 she 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 she 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 she 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 she gridlock? could we gridlock? could you gridlock? could they gridlock?	could I be gridlocking? could you be gridlocking? could she 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 she 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 she 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 she 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 she 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 she 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 she have been gridlocking? couldn't we have been gridlocking? couldn't you have been gridlocking? couldn't they have been gridlocking?