I must lollygag you must lollygag she must lollygag we must lollygag you must lollygag they must lollygag
V-ing form
I must be lollygaging you must be lollygaging she must be lollygaging we must be lollygaging you must be lollygaging they must be lollygaging
Perfect
I must have lollygaged you must have lollygaged she must have lollygaged we must have lollygaged you must have lollygaged they must have lollygaged
V-ing perfect
I must have been lollygaging you must have been lollygaging she must have been lollygaging we must have been lollygaging you must have been lollygaging they must have been lollygaging
Negation
Simple form
I mustn't lollygag you mustn't lollygag she mustn't lollygag we mustn't lollygag you mustn't lollygag they mustn't lollygag
V-ing form
I mustn't be lollygaging you mustn't be lollygaging she mustn't be lollygaging we mustn't be lollygaging you mustn't be lollygaging they mustn't be lollygaging
Perfect
I mustn't have lollygaged you mustn't have lollygaged she mustn't have lollygaged we mustn't have lollygaged you mustn't have lollygaged they mustn't have lollygaged
V-ing perfect
I mustn't have been lollygaging you mustn't have been lollygaging she mustn't have been lollygaging we mustn't have been lollygaging you mustn't have been lollygaging they mustn't have been lollygaging
Interrogative form
Simple form
must I lollygag? must you lollygag? must she lollygag? must we lollygag? must you lollygag? must they lollygag?
V-ing form
must I be lollygaging? must you be lollygaging? must she be lollygaging? must we be lollygaging? must you be lollygaging? must they be lollygaging?
Perfect
must I have lollygaged? must you have lollygaged? must she have lollygaged? must we have lollygaged? must you have lollygaged? must they have lollygaged?
V-ing perfect
must I have been lollygaging? must you have been lollygaging? must she have been lollygaging? must we have been lollygaging? must you have been lollygaging? must they have been lollygaging?
Interro-negative form
Simple form
mustn't I lollygag? mustn't you lollygag? mustn't she lollygag? mustn't we lollygag? mustn't you lollygag? mustn't they lollygag?
V-ing form
mustn't I be lollygaging? mustn't you be lollygaging? mustn't she be lollygaging? mustn't we be lollygaging? mustn't you be lollygaging? mustn't they be lollygaging?
Perfect
mustn't I have lollygaged? mustn't you have lollygaged? mustn't she have lollygaged? mustn't we have lollygaged? mustn't you have lollygaged? mustn't they have lollygaged?
V-ing perfect
mustn't I have been lollygaging? mustn't you have been lollygaging? mustn't she have been lollygaging? mustn't we have been lollygaging? mustn't you have been lollygaging? mustn't they have been lollygaging?