must scumble
Verbe régulier : scumble - scumbled- scumbled

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must scumble
you must scumble
he must scumble
we must scumble
you must scumble
they must scumble 	I must be scumbling
you must be scumbling
he must be scumbling
we must be scumbling
you must be scumbling
they must be scumbling	I must have scumbled
you must have scumbled
he must have scumbled
we must have scumbled
you must have scumbled
they must have scumbled	I must have been scumbling
you must have been scumbling
he must have been scumbling
we must have been scumbling
you must have been scumbling
they must have been scumbling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not scumble
you must not scumble
he must not scumble
we must not scumble
you must not scumble
they must not scumble 	I must not be scumbling
you must not be scumbling
he must not be scumbling
we must not be scumbling
you must not be scumbling
they must not be scumbling	I must not have scumbled
you must not have scumbled
he must not have scumbled
we must not have scumbled
you must not have scumbled
they must not have scumbled	I must not have been scumbling
you must not have been scumbling
he must not have been scumbling
we must not have been scumbling
you must not have been scumbling
they must not have been scumbling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I scumble?
must you scumble?
must he scumble?
must we scumble?
must you scumble?
must they scumble? 	must I be scumbling?
must you be scumbling?
must he be scumbling?
must we be scumbling?
must you be scumbling?
must they be scumbling? 	must I have scumbled?
must you have scumbled?
must he have scumbled?
must we have scumbled?
must you have scumbled?
must they have scumbled? 	must I have been scumbling?
must you have been scumbling?
must he have been scumbling?
must we have been scumbling?
must you have been scumbling?
must they have been scumbling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not scumble?
must you not scumble?
must he not scumble?
must we not scumble?
must you not scumble?
must they not scumble? 	must I not be scumbling?
must you not be scumbling?
must he not be scumbling?
must we not be scumbling?
must you not be scumbling?
must they not be scumbling? 	must I not have scumbled?
must you not have scumbled?
must he not have scumbled?
must we not have scumbled?
must you not have scumbled?
must they not have scumbled? 	must I not have been scumbling?
must you not have been scumbling?
must he not have been scumbling?
must we not have been scumbling?
must you not have been scumbling?
must they not have been scumbling?