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