English verb conjugation
COULD LITTER

Regular verb: litter - littered - littered

Affirmation

Simple form	V-ing form
I could litter you could litter he could litter we could litter you could litter they could litter	I could be littering you could be littering he could be littering we could be littering you could be littering they could be littering
Perfect	V-ing perfect
I could have littered you could have littered he could have littered we could have littered you could have littered they could have littered	I could have been littering you could have been littering he could have been littering we could have been littering you could have been littering they could have been littering

Negation

Simple form	V-ing form
I could not litter you could not litter he could not litter we could not litter you could not litter they could not litter	I could not be littering you could not be littering he could not be littering we could not be littering you could not be littering they could not be littering
Perfect	V-ing perfect
I could not have littered you could not have littered he could not have littered we could not have littered you could not have littered they could not have littered	I could not have been littering you could not have been littering he could not have been littering we could not have been littering you could not have been littering they could not have been littering

Interrogative form

Simple form	V-ing form
could I litter? could you litter? could he litter? could we litter? could you litter? could they litter?	could I be littering? could you be littering? could he be littering? could we be littering? could you be littering? could they be littering?
Perfect	V-ing perfect
could I have littered? could you have littered? could he have littered? could we have littered? could you have littered? could they have littered?	could I have been littering? could you have been littering? could he have been littering? could we have been littering? could you have been littering? could they have been littering?

Interro-negative form

Simple form	V-ing form
could I not litter? could you not litter? could he not litter? could we not litter? could you not litter? could they not litter?	could I not be littering? could you not be littering? could he not be littering? could we not be littering? could you not be littering? could they not be littering?
Perfect	V-ing perfect
could I not have littered? could you not have littered? could he not have littered? could we not have littered? could you not have littered? could they not have littered?	could I not have been littering? could you not have been littering? could he not have been littering? could we not have been littering? could you not have been littering? could they not have been littering?