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