must underpraise
Verbe régulier : underpraise - underpraised- underpraised

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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	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	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
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? 	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?