must skirr
Verbe régulier : skirr - skirred- skirred

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must skirr
you must skirr
she must skirr
we must skirr
you must skirr
they must skirr 	I must be skirring
you must be skirring
she must be skirring
we must be skirring
you must be skirring
they must be skirring	I must have skirred
you must have skirred
she must have skirred
we must have skirred
you must have skirred
they must have skirred	I must have been skirring
you must have been skirring
she must have been skirring
we must have been skirring
you must have been skirring
they must have been skirring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not skirr
you must not skirr
she must not skirr
we must not skirr
you must not skirr
they must not skirr 	I must not be skirring
you must not be skirring
she must not be skirring
we must not be skirring
you must not be skirring
they must not be skirring	I must not have skirred
you must not have skirred
she must not have skirred
we must not have skirred
you must not have skirred
they must not have skirred	I must not have been skirring
you must not have been skirring
she must not have been skirring
we must not have been skirring
you must not have been skirring
they must not have been skirring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I skirr?
must you skirr?
must she skirr?
must we skirr?
must you skirr?
must they skirr? 	must I be skirring?
must you be skirring?
must she be skirring?
must we be skirring?
must you be skirring?
must they be skirring? 	must I have skirred?
must you have skirred?
must she have skirred?
must we have skirred?
must you have skirred?
must they have skirred? 	must I have been skirring?
must you have been skirring?
must she have been skirring?
must we have been skirring?
must you have been skirring?
must they have been skirring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not skirr?
must you not skirr?
must she not skirr?
must we not skirr?
must you not skirr?
must they not skirr? 	must I not be skirring?
must you not be skirring?
must she not be skirring?
must we not be skirring?
must you not be skirring?
must they not be skirring? 	must I not have skirred?
must you not have skirred?
must she not have skirred?
must we not have skirred?
must you not have skirred?
must they not have skirred? 	must I not have been skirring?
must you not have been skirring?
must she not have been skirring?
must we not have been skirring?
must you not have been skirring?
must they not have been skirring?