I must disharmonise you must disharmonise he must disharmonise we must disharmonise you must disharmonise they must disharmonise
V-ing form
I must be disharmonising you must be disharmonising he must be disharmonising we must be disharmonising you must be disharmonising they must be disharmonising
Perfect
I must have disharmonised you must have disharmonised he must have disharmonised we must have disharmonised you must have disharmonised they must have disharmonised
V-ing perfect
I must have been disharmonising you must have been disharmonising he must have been disharmonising we must have been disharmonising you must have been disharmonising they must have been disharmonising
Negation
Simple form
I mustn't disharmonise you mustn't disharmonise he mustn't disharmonise we mustn't disharmonise you mustn't disharmonise they mustn't disharmonise
V-ing form
I mustn't be disharmonising you mustn't be disharmonising he mustn't be disharmonising we mustn't be disharmonising you mustn't be disharmonising they mustn't be disharmonising
Perfect
I mustn't have disharmonised you mustn't have disharmonised he mustn't have disharmonised we mustn't have disharmonised you mustn't have disharmonised they mustn't have disharmonised
V-ing perfect
I mustn't have been disharmonising you mustn't have been disharmonising he mustn't have been disharmonising we mustn't have been disharmonising you mustn't have been disharmonising they mustn't have been disharmonising
Interrogative form
Simple form
must I disharmonise? must you disharmonise? must he disharmonise? must we disharmonise? must you disharmonise? must they disharmonise?
V-ing form
must I be disharmonising? must you be disharmonising? must he be disharmonising? must we be disharmonising? must you be disharmonising? must they be disharmonising?
Perfect
must I have disharmonised? must you have disharmonised? must he have disharmonised? must we have disharmonised? must you have disharmonised? must they have disharmonised?
V-ing perfect
must I have been disharmonising? must you have been disharmonising? must he have been disharmonising? must we have been disharmonising? must you have been disharmonising? must they have been disharmonising?
Interro-negative form
Simple form
mustn't I disharmonise? mustn't you disharmonise? mustn't he disharmonise? mustn't we disharmonise? mustn't you disharmonise? mustn't they disharmonise?
V-ing form
mustn't I be disharmonising? mustn't you be disharmonising? mustn't he be disharmonising? mustn't we be disharmonising? mustn't you be disharmonising? mustn't they be disharmonising?
Perfect
mustn't I have disharmonised? mustn't you have disharmonised? mustn't he have disharmonised? mustn't we have disharmonised? mustn't you have disharmonised? mustn't they have disharmonised?
V-ing perfect
mustn't I have been disharmonising? mustn't you have been disharmonising? mustn't he have been disharmonising? mustn't we have been disharmonising? mustn't you have been disharmonising? mustn't they have been disharmonising?