I must abuse you must abuse he must abuse we must abuse you must abuse they must abuse
V-ing form
I must be abusing you must be abusing he must be abusing we must be abusing you must be abusing they must be abusing
Perfect
I must have abused you must have abused he must have abused we must have abused you must have abused they must have abused
V-ing perfect
I must have been abusing you must have been abusing he must have been abusing we must have been abusing you must have been abusing they must have been abusing
Negation
Simple form
I must not abuse you must not abuse he must not abuse we must not abuse you must not abuse they must not abuse
V-ing form
I must not be abusing you must not be abusing he must not be abusing we must not be abusing you must not be abusing they must not be abusing
Perfect
I must not have abused you must not have abused he must not have abused we must not have abused you must not have abused they must not have abused
V-ing perfect
I must not have been abusing you must not have been abusing he must not have been abusing we must not have been abusing you must not have been abusing they must not have been abusing
Interrogative form
Simple form
must I abuse? must you abuse? must he abuse? must we abuse? must you abuse? must they abuse?
V-ing form
must I be abusing? must you be abusing? must he be abusing? must we be abusing? must you be abusing? must they be abusing?
Perfect
must I have abused? must you have abused? must he have abused? must we have abused? must you have abused? must they have abused?
V-ing perfect
must I have been abusing? must you have been abusing? must he have been abusing? must we have been abusing? must you have been abusing? must they have been abusing?
Interro-negative form
Simple form
must I not abuse? must you not abuse? must he not abuse? must we not abuse? must you not abuse? must they not abuse?
V-ing form
must I not be abusing? must you not be abusing? must he not be abusing? must we not be abusing? must you not be abusing? must they not be abusing?
Perfect
must I not have abused? must you not have abused? must he not have abused? must we not have abused? must you not have abused? must they not have abused?
V-ing perfect
must I not have been abusing? must you not have been abusing? must he not have been abusing? must we not have been abusing? must you not have been abusing? must they not have been abusing?