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