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