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