I must harmonise you must harmonise she must harmonise we must harmonise you must harmonise they must harmonise
V-ing form
I must be harmonising you must be harmonising she must be harmonising we must be harmonising you must be harmonising they must be harmonising
Perfect
I must have harmonised you must have harmonised she must have harmonised we must have harmonised you must have harmonised they must have harmonised
V-ing perfect
I must have been harmonising you must have been harmonising she must have been harmonising we must have been harmonising you must have been harmonising they must have been harmonising
Negation
Simple form
I must not harmonise you must not harmonise she must not harmonise we must not harmonise you must not harmonise they must not harmonise
V-ing form
I must not be harmonising you must not be harmonising she must not be harmonising we must not be harmonising you must not be harmonising they must not be harmonising
Perfect
I must not have harmonised you must not have harmonised she must not have harmonised we must not have harmonised you must not have harmonised they must not have harmonised
V-ing perfect
I must not have been harmonising you must not have been harmonising she must not have been harmonising we must not have been harmonising you must not have been harmonising they must not have been harmonising
Interrogative form
Simple form
must I harmonise? must you harmonise? must she harmonise? must we harmonise? must you harmonise? must they harmonise?
V-ing form
must I be harmonising? must you be harmonising? must she be harmonising? must we be harmonising? must you be harmonising? must they be harmonising?
Perfect
must I have harmonised? must you have harmonised? must she have harmonised? must we have harmonised? must you have harmonised? must they have harmonised?
V-ing perfect
must I have been harmonising? must you have been harmonising? must she have been harmonising? must we have been harmonising? must you have been harmonising? must they have been harmonising?
Interro-negative form
Simple form
must I not harmonise? must you not harmonise? must she not harmonise? must we not harmonise? must you not harmonise? must they not harmonise?
V-ing form
must I not be harmonising? must you not be harmonising? must she not be harmonising? must we not be harmonising? must you not be harmonising? must they not be harmonising?
Perfect
must I not have harmonised? must you not have harmonised? must she not have harmonised? must we not have harmonised? must you not have harmonised? must they not have harmonised?
V-ing perfect
must I not have been harmonising? must you not have been harmonising? must she not have been harmonising? must we not have been harmonising? must you not have been harmonising? must they not have been harmonising?