I must depressurise you must depressurise she must depressurise we must depressurise you must depressurise they must depressurise
V-ing form
I must be depressurising you must be depressurising she must be depressurising we must be depressurising you must be depressurising they must be depressurising
Perfect
I must have depressurised you must have depressurised she must have depressurised we must have depressurised you must have depressurised they must have depressurised
V-ing perfect
I must have been depressurising you must have been depressurising she must have been depressurising we must have been depressurising you must have been depressurising they must have been depressurising
Negation
Simple form
I must not depressurise you must not depressurise she must not depressurise we must not depressurise you must not depressurise they must not depressurise
V-ing form
I must not be depressurising you must not be depressurising she must not be depressurising we must not be depressurising you must not be depressurising they must not be depressurising
Perfect
I must not have depressurised you must not have depressurised she must not have depressurised we must not have depressurised you must not have depressurised they must not have depressurised
V-ing perfect
I must not have been depressurising you must not have been depressurising she must not have been depressurising we must not have been depressurising you must not have been depressurising they must not have been depressurising
Interrogative form
Simple form
must I depressurise? must you depressurise? must she depressurise? must we depressurise? must you depressurise? must they depressurise?
V-ing form
must I be depressurising? must you be depressurising? must she be depressurising? must we be depressurising? must you be depressurising? must they be depressurising?
Perfect
must I have depressurised? must you have depressurised? must she have depressurised? must we have depressurised? must you have depressurised? must they have depressurised?
V-ing perfect
must I have been depressurising? must you have been depressurising? must she have been depressurising? must we have been depressurising? must you have been depressurising? must they have been depressurising?
Interro-negative form
Simple form
must I not depressurise? must you not depressurise? must she not depressurise? must we not depressurise? must you not depressurise? must they not depressurise?
V-ing form
must I not be depressurising? must you not be depressurising? must she not be depressurising? must we not be depressurising? must you not be depressurising? must they not be depressurising?
Perfect
must I not have depressurised? must you not have depressurised? must she not have depressurised? must we not have depressurised? must you not have depressurised? must they not have depressurised?
V-ing perfect
must I not have been depressurising? must you not have been depressurising? must she not have been depressurising? must we not have been depressurising? must you not have been depressurising? must they not have been depressurising?