must skulk
Verbe régulier : skulk - skulked- skulked
Traduction française : rôder 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must skulk
you must skulk
she must skulk
we must skulk
you must skulk
they must skulk 	I must be skulking
you must be skulking
she must be skulking
we must be skulking
you must be skulking
they must be skulking	I must have skulked
you must have skulked
she must have skulked
we must have skulked
you must have skulked
they must have skulked	I must have been skulking
you must have been skulking
she must have been skulking
we must have been skulking
you must have been skulking
they must have been skulking	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not skulk
you must not skulk
she must not skulk
we must not skulk
you must not skulk
they must not skulk 	I must not be skulking
you must not be skulking
she must not be skulking
we must not be skulking
you must not be skulking
they must not be skulking	I must not have skulked
you must not have skulked
she must not have skulked
we must not have skulked
you must not have skulked
they must not have skulked	I must not have been skulking
you must not have been skulking
she must not have been skulking
we must not have been skulking
you must not have been skulking
they must not have been skulking	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I skulk?
must you skulk?
must she skulk?
must we skulk?
must you skulk?
must they skulk? 	must I be skulking?
must you be skulking?
must she be skulking?
must we be skulking?
must you be skulking?
must they be skulking? 	must I have skulked?
must you have skulked?
must she have skulked?
must we have skulked?
must you have skulked?
must they have skulked? 	must I have been skulking?
must you have been skulking?
must she have been skulking?
must we have been skulking?
must you have been skulking?
must they have been skulking? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not skulk?
must you not skulk?
must she not skulk?
must we not skulk?
must you not skulk?
must they not skulk? 	must I not be skulking?
must you not be skulking?
must she not be skulking?
must we not be skulking?
must you not be skulking?
must they not be skulking? 	must I not have skulked?
must you not have skulked?
must she not have skulked?
must we not have skulked?
must you not have skulked?
must they not have skulked? 	must I not have been skulking?
must you not have been skulking?
must she not have been skulking?
must we not have been skulking?
must you not have been skulking?
must they not have been skulking?