I must saunter you must saunter he must saunter we must saunter you must saunter they must saunter
V-ing form
I must be sauntering you must be sauntering he must be sauntering we must be sauntering you must be sauntering they must be sauntering
Perfect
I must have sauntered you must have sauntered he must have sauntered we must have sauntered you must have sauntered they must have sauntered
V-ing perfect
I must have been sauntering you must have been sauntering he must have been sauntering we must have been sauntering you must have been sauntering they must have been sauntering
Negation
Simple form
I mustn't saunter you mustn't saunter he mustn't saunter we mustn't saunter you mustn't saunter they mustn't saunter
V-ing form
I mustn't be sauntering you mustn't be sauntering he mustn't be sauntering we mustn't be sauntering you mustn't be sauntering they mustn't be sauntering
Perfect
I mustn't have sauntered you mustn't have sauntered he mustn't have sauntered we mustn't have sauntered you mustn't have sauntered they mustn't have sauntered
V-ing perfect
I mustn't have been sauntering you mustn't have been sauntering he mustn't have been sauntering we mustn't have been sauntering you mustn't have been sauntering they mustn't have been sauntering
Interrogative form
Simple form
must I saunter? must you saunter? must he saunter? must we saunter? must you saunter? must they saunter?
V-ing form
must I be sauntering? must you be sauntering? must he be sauntering? must we be sauntering? must you be sauntering? must they be sauntering?
Perfect
must I have sauntered? must you have sauntered? must he have sauntered? must we have sauntered? must you have sauntered? must they have sauntered?
V-ing perfect
must I have been sauntering? must you have been sauntering? must he have been sauntering? must we have been sauntering? must you have been sauntering? must they have been sauntering?
Interro-negative form
Simple form
mustn't I saunter? mustn't you saunter? mustn't he saunter? mustn't we saunter? mustn't you saunter? mustn't they saunter?
V-ing form
mustn't I be sauntering? mustn't you be sauntering? mustn't he be sauntering? mustn't we be sauntering? mustn't you be sauntering? mustn't they be sauntering?
Perfect
mustn't I have sauntered? mustn't you have sauntered? mustn't he have sauntered? mustn't we have sauntered? mustn't you have sauntered? mustn't they have sauntered?
V-ing perfect
mustn't I have been sauntering? mustn't you have been sauntering? mustn't he have been sauntering? mustn't we have been sauntering? mustn't you have been sauntering? mustn't they have been sauntering?