must pip
Verbe régulier : pip - pipped- pipped
Traduction française : pépier - (UK) battre 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must pip
you must pip
she must pip
we must pip
you must pip
they must pip 	I must be pipping
you must be pipping
she must be pipping
we must be pipping
you must be pipping
they must be pipping	I must have pipped
you must have pipped
she must have pipped
we must have pipped
you must have pipped
they must have pipped	I must have been pipping
you must have been pipping
she must have been pipping
we must have been pipping
you must have been pipping
they must have been pipping	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not pip
you must not pip
she must not pip
we must not pip
you must not pip
they must not pip 	I must not be pipping
you must not be pipping
she must not be pipping
we must not be pipping
you must not be pipping
they must not be pipping	I must not have pipped
you must not have pipped
she must not have pipped
we must not have pipped
you must not have pipped
they must not have pipped	I must not have been pipping
you must not have been pipping
she must not have been pipping
we must not have been pipping
you must not have been pipping
they must not have been pipping	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I pip?
must you pip?
must she pip?
must we pip?
must you pip?
must they pip? 	must I be pipping?
must you be pipping?
must she be pipping?
must we be pipping?
must you be pipping?
must they be pipping? 	must I have pipped?
must you have pipped?
must she have pipped?
must we have pipped?
must you have pipped?
must they have pipped? 	must I have been pipping?
must you have been pipping?
must she have been pipping?
must we have been pipping?
must you have been pipping?
must they have been pipping? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not pip?
must you not pip?
must she not pip?
must we not pip?
must you not pip?
must they not pip? 	must I not be pipping?
must you not be pipping?
must she not be pipping?
must we not be pipping?
must you not be pipping?
must they not be pipping? 	must I not have pipped?
must you not have pipped?
must she not have pipped?
must we not have pipped?
must you not have pipped?
must they not have pipped? 	must I not have been pipping?
must you not have been pipping?
must she not have been pipping?
must we not have been pipping?
must you not have been pipping?
must they not have been pipping?