English verb conjugation
MUST LITTER

Regular verb: litter - littered - littered

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

Simple form	V-ing form
mustn't I litter? mustn't you litter? mustn't she litter? mustn't we litter? mustn't you litter? mustn't they litter?	mustn't I be littering? mustn't you be littering? mustn't she be littering? mustn't we be littering? mustn't you be littering? mustn't they be littering?
Perfect	V-ing perfect
mustn't I have littered? mustn't you have littered? mustn't she have littered? mustn't we have littered? mustn't you have littered? mustn't they have littered?	mustn't I have been littering? mustn't you have been littering? mustn't she have been littering? mustn't we have been littering? mustn't you have been littering? mustn't they have been littering?