English verb conjugation
CAN LITTER

Regular verb: litter - littered - littered

Affirmation

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

Negation

Simple form	V-ing form
I cannot litter you cannot litter she cannot litter we cannot litter you cannot litter they cannot litter	I cannot be littering you cannot be littering she cannot be littering we cannot be littering you cannot be littering they cannot be littering
Perfect	V-ing perfect
I cannot have littered you cannot have littered she cannot have littered we cannot have littered you cannot have littered they cannot have littered	I cannot have been littering you cannot have been littering she cannot have been littering we cannot have been littering you cannot have been littering they cannot have been littering

Interrogative form

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

Interro-negative form

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