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