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