English verb conjugation
MUST SOBER

Regular verb: sober - sobered - sobered

Affirmation

Simple form	V-ing form
I must sober you must sober he must sober we must sober you must sober they must sober	I must be sobering you must be sobering he must be sobering we must be sobering you must be sobering they must be sobering
Perfect	V-ing perfect
I must have sobered you must have sobered he must have sobered we must have sobered you must have sobered they must have sobered	I must have been sobering you must have been sobering he must have been sobering we must have been sobering you must have been sobering they must have been sobering

Negation

Simple form	V-ing form
I must not sober you must not sober he must not sober we must not sober you must not sober they must not sober	I must not be sobering you must not be sobering he must not be sobering we must not be sobering you must not be sobering they must not be sobering
Perfect	V-ing perfect
I must not have sobered you must not have sobered he must not have sobered we must not have sobered you must not have sobered they must not have sobered	I must not have been sobering you must not have been sobering he must not have been sobering we must not have been sobering you must not have been sobering they must not have been sobering

Interrogative form

Simple form	V-ing form
must I sober? must you sober? must he sober? must we sober? must you sober? must they sober?	must I be sobering? must you be sobering? must he be sobering? must we be sobering? must you be sobering? must they be sobering?
Perfect	V-ing perfect
must I have sobered? must you have sobered? must he have sobered? must we have sobered? must you have sobered? must they have sobered?	must I have been sobering? must you have been sobering? must he have been sobering? must we have been sobering? must you have been sobering? must they have been sobering?

Interro-negative form

Simple form	V-ing form
must I not sober? must you not sober? must he not sober? must we not sober? must you not sober? must they not sober?	must I not be sobering? must you not be sobering? must he not be sobering? must we not be sobering? must you not be sobering? must they not be sobering?
Perfect	V-ing perfect
must I not have sobered? must you not have sobered? must he not have sobered? must we not have sobered? must you not have sobered? must they not have sobered?	must I not have been sobering? must you not have been sobering? must he not have been sobering? must we not have been sobering? must you not have been sobering? must they not have been sobering?