I must touch-type you must touch-type he must touch-type we must touch-type you must touch-type they must touch-type
V-ing form
I must be touch-typing you must be touch-typing he must be touch-typing we must be touch-typing you must be touch-typing they must be touch-typing
Perfect
I must have touch-typed you must have touch-typed he must have touch-typed we must have touch-typed you must have touch-typed they must have touch-typed
V-ing perfect
I must have been touch-typing you must have been touch-typing he must have been touch-typing we must have been touch-typing you must have been touch-typing they must have been touch-typing
Negation
Simple form
I mustn't touch-type you mustn't touch-type he mustn't touch-type we mustn't touch-type you mustn't touch-type they mustn't touch-type
V-ing form
I mustn't be touch-typing you mustn't be touch-typing he mustn't be touch-typing we mustn't be touch-typing you mustn't be touch-typing they mustn't be touch-typing
Perfect
I mustn't have touch-typed you mustn't have touch-typed he mustn't have touch-typed we mustn't have touch-typed you mustn't have touch-typed they mustn't have touch-typed
V-ing perfect
I mustn't have been touch-typing you mustn't have been touch-typing he mustn't have been touch-typing we mustn't have been touch-typing you mustn't have been touch-typing they mustn't have been touch-typing
Interrogative form
Simple form
must I touch-type? must you touch-type? must he touch-type? must we touch-type? must you touch-type? must they touch-type?
V-ing form
must I be touch-typing? must you be touch-typing? must he be touch-typing? must we be touch-typing? must you be touch-typing? must they be touch-typing?
Perfect
must I have touch-typed? must you have touch-typed? must he have touch-typed? must we have touch-typed? must you have touch-typed? must they have touch-typed?
V-ing perfect
must I have been touch-typing? must you have been touch-typing? must he have been touch-typing? must we have been touch-typing? must you have been touch-typing? must they have been touch-typing?
Interro-negative form
Simple form
mustn't I touch-type? mustn't you touch-type? mustn't he touch-type? mustn't we touch-type? mustn't you touch-type? mustn't they touch-type?
V-ing form
mustn't I be touch-typing? mustn't you be touch-typing? mustn't he be touch-typing? mustn't we be touch-typing? mustn't you be touch-typing? mustn't they be touch-typing?
Perfect
mustn't I have touch-typed? mustn't you have touch-typed? mustn't he have touch-typed? mustn't we have touch-typed? mustn't you have touch-typed? mustn't they have touch-typed?
V-ing perfect
mustn't I have been touch-typing? mustn't you have been touch-typing? mustn't he have been touch-typing? mustn't we have been touch-typing? mustn't you have been touch-typing? mustn't they have been touch-typing?