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 must not reach you must not reach she must not reach we must not reach you must not reach they must not reach
V-ing form
I must not be reaching you must not be reaching she must not be reaching we must not be reaching you must not be reaching they must not be reaching
Perfect
I must not have reached you must not have reached she must not have reached we must not have reached you must not have reached they must not have reached
V-ing perfect
I must not have been reaching you must not have been reaching she must not have been reaching we must not have been reaching you must not have been reaching they must not 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
must I not reach? must you not reach? must she not reach? must we not reach? must you not reach? must they not reach?
V-ing form
must I not be reaching? must you not be reaching? must she not be reaching? must we not be reaching? must you not be reaching? must they not be reaching?
Perfect
must I not have reached? must you not have reached? must she not have reached? must we not have reached? must you not have reached? must they not have reached?
V-ing perfect
must I not have been reaching? must you not have been reaching? must she not have been reaching? must we not have been reaching? must you not have been reaching? must they not have been reaching?