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