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