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 must not touch-type you must not touch-type he must not touch-type we must not touch-type you must not touch-type they must not touch-type
V-ing form
I must not be touch-typing you must not be touch-typing he must not be touch-typing we must not be touch-typing you must not be touch-typing they must not be touch-typing
Perfect
I must not have touch-typed you must not have touch-typed he must not have touch-typed we must not have touch-typed you must not have touch-typed they must not have touch-typed
V-ing perfect
I must not have been touch-typing you must not have been touch-typing he must not have been touch-typing we must not have been touch-typing you must not have been touch-typing they must not 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
must I not touch-type? must you not touch-type? must he not touch-type? must we not touch-type? must you not touch-type? must they not touch-type?
V-ing form
must I not be touch-typing? must you not be touch-typing? must he not be touch-typing? must we not be touch-typing? must you not be touch-typing? must they not be touch-typing?
Perfect
must I not have touch-typed? must you not have touch-typed? must he not have touch-typed? must we not have touch-typed? must you not have touch-typed? must they not have touch-typed?
V-ing perfect
must I not have been touch-typing? must you not have been touch-typing? must he not have been touch-typing? must we not have been touch-typing? must you not have been touch-typing? must they not have been touch-typing?