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