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