I must lipread you must lipread he must lipread we must lipread you must lipread they must lipread
V-ing form
I must be lipreading you must be lipreading he must be lipreading we must be lipreading you must be lipreading they must be lipreading
Perfect
I must have lipread you must have lipread he must have lipread we must have lipread you must have lipread they must have lipread
V-ing perfect
I must have been lipreading you must have been lipreading he must have been lipreading we must have been lipreading you must have been lipreading they must have been lipreading
Negation
Simple form
I must not lipread you must not lipread he must not lipread we must not lipread you must not lipread they must not lipread
V-ing form
I must not be lipreading you must not be lipreading he must not be lipreading we must not be lipreading you must not be lipreading they must not be lipreading
Perfect
I must not have lipread you must not have lipread he must not have lipread we must not have lipread you must not have lipread they must not have lipread
V-ing perfect
I must not have been lipreading you must not have been lipreading he must not have been lipreading we must not have been lipreading you must not have been lipreading they must not have been lipreading
Interrogative form
Simple form
must I lipread? must you lipread? must he lipread? must we lipread? must you lipread? must they lipread?
V-ing form
must I be lipreading? must you be lipreading? must he be lipreading? must we be lipreading? must you be lipreading? must they be lipreading?
Perfect
must I have lipread? must you have lipread? must he have lipread? must we have lipread? must you have lipread? must they have lipread?
V-ing perfect
must I have been lipreading? must you have been lipreading? must he have been lipreading? must we have been lipreading? must you have been lipreading? must they have been lipreading?
Interro-negative form
Simple form
must I not lipread? must you not lipread? must he not lipread? must we not lipread? must you not lipread? must they not lipread?
V-ing form
must I not be lipreading? must you not be lipreading? must he not be lipreading? must we not be lipreading? must you not be lipreading? must they not be lipreading?
Perfect
must I not have lipread? must you not have lipread? must he not have lipread? must we not have lipread? must you not have lipread? must they not have lipread?
V-ing perfect
must I not have been lipreading? must you not have been lipreading? must he not have been lipreading? must we not have been lipreading? must you not have been lipreading? must they not have been lipreading?