I must shower you must shower she must shower we must shower you must shower they must shower
V-ing form
I must be showering you must be showering she must be showering we must be showering you must be showering they must be showering
Perfect
I must have showered you must have showered she must have showered we must have showered you must have showered they must have showered
V-ing perfect
I must have been showering you must have been showering she must have been showering we must have been showering you must have been showering they must have been showering
Negation
Simple form
I mustn't shower you mustn't shower she mustn't shower we mustn't shower you mustn't shower they mustn't shower
V-ing form
I mustn't be showering you mustn't be showering she mustn't be showering we mustn't be showering you mustn't be showering they mustn't be showering
Perfect
I mustn't have showered you mustn't have showered she mustn't have showered we mustn't have showered you mustn't have showered they mustn't have showered
V-ing perfect
I mustn't have been showering you mustn't have been showering she mustn't have been showering we mustn't have been showering you mustn't have been showering they mustn't have been showering
Interrogative form
Simple form
must I shower? must you shower? must she shower? must we shower? must you shower? must they shower?
V-ing form
must I be showering? must you be showering? must she be showering? must we be showering? must you be showering? must they be showering?
Perfect
must I have showered? must you have showered? must she have showered? must we have showered? must you have showered? must they have showered?
V-ing perfect
must I have been showering? must you have been showering? must she have been showering? must we have been showering? must you have been showering? must they have been showering?
Interro-negative form
Simple form
mustn't I shower? mustn't you shower? mustn't she shower? mustn't we shower? mustn't you shower? mustn't they shower?
V-ing form
mustn't I be showering? mustn't you be showering? mustn't she be showering? mustn't we be showering? mustn't you be showering? mustn't they be showering?
Perfect
mustn't I have showered? mustn't you have showered? mustn't she have showered? mustn't we have showered? mustn't you have showered? mustn't they have showered?
V-ing perfect
mustn't I have been showering? mustn't you have been showering? mustn't she have been showering? mustn't we have been showering? mustn't you have been showering? mustn't they have been showering?