English verb conjugation
MUST SANDPAPER

Regular verb: sandpaper - sandpapered - sandpapered

Affirmation

Simple form	V-ing form
I must sandpaper you must sandpaper he must sandpaper we must sandpaper you must sandpaper they must sandpaper	I must be sandpapering you must be sandpapering he must be sandpapering we must be sandpapering you must be sandpapering they must be sandpapering
Perfect	V-ing perfect
I must have sandpapered you must have sandpapered he must have sandpapered we must have sandpapered you must have sandpapered they must have sandpapered	I must have been sandpapering you must have been sandpapering he must have been sandpapering we must have been sandpapering you must have been sandpapering they must have been sandpapering

Negation

Simple form	V-ing form
I must not sandpaper you must not sandpaper he must not sandpaper we must not sandpaper you must not sandpaper they must not sandpaper	I must not be sandpapering you must not be sandpapering he must not be sandpapering we must not be sandpapering you must not be sandpapering they must not be sandpapering
Perfect	V-ing perfect
I must not have sandpapered you must not have sandpapered he must not have sandpapered we must not have sandpapered you must not have sandpapered they must not have sandpapered	I must not have been sandpapering you must not have been sandpapering he must not have been sandpapering we must not have been sandpapering you must not have been sandpapering they must not have been sandpapering

Interrogative form

Simple form	V-ing form
must I sandpaper? must you sandpaper? must he sandpaper? must we sandpaper? must you sandpaper? must they sandpaper?	must I be sandpapering? must you be sandpapering? must he be sandpapering? must we be sandpapering? must you be sandpapering? must they be sandpapering?
Perfect	V-ing perfect
must I have sandpapered? must you have sandpapered? must he have sandpapered? must we have sandpapered? must you have sandpapered? must they have sandpapered?	must I have been sandpapering? must you have been sandpapering? must he have been sandpapering? must we have been sandpapering? must you have been sandpapering? must they have been sandpapering?

Interro-negative form

Simple form	V-ing form
must I not sandpaper? must you not sandpaper? must he not sandpaper? must we not sandpaper? must you not sandpaper? must they not sandpaper?	must I not be sandpapering? must you not be sandpapering? must he not be sandpapering? must we not be sandpapering? must you not be sandpapering? must they not be sandpapering?
Perfect	V-ing perfect
must I not have sandpapered? must you not have sandpapered? must he not have sandpapered? must we not have sandpapered? must you not have sandpapered? must they not have sandpapered?	must I not have been sandpapering? must you not have been sandpapering? must he not have been sandpapering? must we not have been sandpapering? must you not have been sandpapering? must they not have been sandpapering?