English verb conjugation
MUST UNDERPRAISE

Regular verb: underpraise - underpraised - underpraised

Affirmation

Simple form	V-ing form
I must underpraise you must underpraise he must underpraise we must underpraise you must underpraise they must underpraise	I must be underpraising you must be underpraising he must be underpraising we must be underpraising you must be underpraising they must be underpraising
Perfect	V-ing perfect
I must have underpraised you must have underpraised he must have underpraised we must have underpraised you must have underpraised they must have underpraised	I must have been underpraising you must have been underpraising he must have been underpraising we must have been underpraising you must have been underpraising they must have been underpraising

Negation

Simple form	V-ing form
I must not underpraise you must not underpraise he must not underpraise we must not underpraise you must not underpraise they must not underpraise	I must not be underpraising you must not be underpraising he must not be underpraising we must not be underpraising you must not be underpraising they must not be underpraising
Perfect	V-ing perfect
I must not have underpraised you must not have underpraised he must not have underpraised we must not have underpraised you must not have underpraised they must not have underpraised	I must not have been underpraising you must not have been underpraising he must not have been underpraising we must not have been underpraising you must not have been underpraising they must not have been underpraising

Interrogative form

Simple form	V-ing form
must I underpraise? must you underpraise? must he underpraise? must we underpraise? must you underpraise? must they underpraise?	must I be underpraising? must you be underpraising? must he be underpraising? must we be underpraising? must you be underpraising? must they be underpraising?
Perfect	V-ing perfect
must I have underpraised? must you have underpraised? must he have underpraised? must we have underpraised? must you have underpraised? must they have underpraised?	must I have been underpraising? must you have been underpraising? must he have been underpraising? must we have been underpraising? must you have been underpraising? must they have been underpraising?

Interro-negative form

Simple form	V-ing form
must I not underpraise? must you not underpraise? must he not underpraise? must we not underpraise? must you not underpraise? must they not underpraise?	must I not be underpraising? must you not be underpraising? must he not be underpraising? must we not be underpraising? must you not be underpraising? must they not be underpraising?
Perfect	V-ing perfect
must I not have underpraised? must you not have underpraised? must he not have underpraised? must we not have underpraised? must you not have underpraised? must they not have underpraised?	must I not have been underpraising? must you not have been underpraising? must he not have been underpraising? must we not have been underpraising? must you not have been underpraising? must they not have been underpraising?