I must ill-treat you must ill-treat he must ill-treat we must ill-treat you must ill-treat they must ill-treat
V-ing form
I must be ill-treating you must be ill-treating he must be ill-treating we must be ill-treating you must be ill-treating they must be ill-treating
Perfect
I must have ill-treated you must have ill-treated he must have ill-treated we must have ill-treated you must have ill-treated they must have ill-treated
V-ing perfect
I must have been ill-treating you must have been ill-treating he must have been ill-treating we must have been ill-treating you must have been ill-treating they must have been ill-treating
Negation
Simple form
I mustn't ill-treat you mustn't ill-treat he mustn't ill-treat we mustn't ill-treat you mustn't ill-treat they mustn't ill-treat
V-ing form
I mustn't be ill-treating you mustn't be ill-treating he mustn't be ill-treating we mustn't be ill-treating you mustn't be ill-treating they mustn't be ill-treating
Perfect
I mustn't have ill-treated you mustn't have ill-treated he mustn't have ill-treated we mustn't have ill-treated you mustn't have ill-treated they mustn't have ill-treated
V-ing perfect
I mustn't have been ill-treating you mustn't have been ill-treating he mustn't have been ill-treating we mustn't have been ill-treating you mustn't have been ill-treating they mustn't have been ill-treating
Interrogative form
Simple form
must I ill-treat? must you ill-treat? must he ill-treat? must we ill-treat? must you ill-treat? must they ill-treat?
V-ing form
must I be ill-treating? must you be ill-treating? must he be ill-treating? must we be ill-treating? must you be ill-treating? must they be ill-treating?
Perfect
must I have ill-treated? must you have ill-treated? must he have ill-treated? must we have ill-treated? must you have ill-treated? must they have ill-treated?
V-ing perfect
must I have been ill-treating? must you have been ill-treating? must he have been ill-treating? must we have been ill-treating? must you have been ill-treating? must they have been ill-treating?
Interro-negative form
Simple form
mustn't I ill-treat? mustn't you ill-treat? mustn't he ill-treat? mustn't we ill-treat? mustn't you ill-treat? mustn't they ill-treat?
V-ing form
mustn't I be ill-treating? mustn't you be ill-treating? mustn't he be ill-treating? mustn't we be ill-treating? mustn't you be ill-treating? mustn't they be ill-treating?
Perfect
mustn't I have ill-treated? mustn't you have ill-treated? mustn't he have ill-treated? mustn't we have ill-treated? mustn't you have ill-treated? mustn't they have ill-treated?
V-ing perfect
mustn't I have been ill-treating? mustn't you have been ill-treating? mustn't he have been ill-treating? mustn't we have been ill-treating? mustn't you have been ill-treating? mustn't they have been ill-treating?