English verb conjugation
MUST UNDERSTEER

Regular verb: understeer - understeered - understeered

Affirmation

Simple form	V-ing form
I must understeer you must understeer he must understeer we must understeer you must understeer they must understeer	I must be understeering you must be understeering he must be understeering we must be understeering you must be understeering they must be understeering
Perfect	V-ing perfect
I must have understeered you must have understeered he must have understeered we must have understeered you must have understeered they must have understeered	I must have been understeering you must have been understeering he must have been understeering we must have been understeering you must have been understeering they must have been understeering

Negation

Simple form	V-ing form
I must not understeer you must not understeer he must not understeer we must not understeer you must not understeer they must not understeer	I must not be understeering you must not be understeering he must not be understeering we must not be understeering you must not be understeering they must not be understeering
Perfect	V-ing perfect
I must not have understeered you must not have understeered he must not have understeered we must not have understeered you must not have understeered they must not have understeered	I must not have been understeering you must not have been understeering he must not have been understeering we must not have been understeering you must not have been understeering they must not have been understeering

Interrogative form

Simple form	V-ing form
must I understeer? must you understeer? must he understeer? must we understeer? must you understeer? must they understeer?	must I be understeering? must you be understeering? must he be understeering? must we be understeering? must you be understeering? must they be understeering?
Perfect	V-ing perfect
must I have understeered? must you have understeered? must he have understeered? must we have understeered? must you have understeered? must they have understeered?	must I have been understeering? must you have been understeering? must he have been understeering? must we have been understeering? must you have been understeering? must they have been understeering?

Interro-negative form

Simple form	V-ing form
must I not understeer? must you not understeer? must he not understeer? must we not understeer? must you not understeer? must they not understeer?	must I not be understeering? must you not be understeering? must he not be understeering? must we not be understeering? must you not be understeering? must they not be understeering?
Perfect	V-ing perfect
must I not have understeered? must you not have understeered? must he not have understeered? must we not have understeered? must you not have understeered? must they not have understeered?	must I not have been understeering? must you not have been understeering? must he not have been understeering? must we not have been understeering? must you not have been understeering? must they not have been understeering?