must bubble
Verbe régulier : bubble - bubbled- bubbled
Traduction française : bouillonner - gargouiller 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must bubble
you must bubble
she must bubble
we must bubble
you must bubble
they must bubble 	I must be bubbling
you must be bubbling
she must be bubbling
we must be bubbling
you must be bubbling
they must be bubbling	I must have bubbled
you must have bubbled
she must have bubbled
we must have bubbled
you must have bubbled
they must have bubbled	I must have been bubbling
you must have been bubbling
she must have been bubbling
we must have been bubbling
you must have been bubbling
they must have been bubbling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not bubble
you must not bubble
she must not bubble
we must not bubble
you must not bubble
they must not bubble 	I must not be bubbling
you must not be bubbling
she must not be bubbling
we must not be bubbling
you must not be bubbling
they must not be bubbling	I must not have bubbled
you must not have bubbled
she must not have bubbled
we must not have bubbled
you must not have bubbled
they must not have bubbled	I must not have been bubbling
you must not have been bubbling
she must not have been bubbling
we must not have been bubbling
you must not have been bubbling
they must not have been bubbling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I bubble?
must you bubble?
must she bubble?
must we bubble?
must you bubble?
must they bubble? 	must I be bubbling?
must you be bubbling?
must she be bubbling?
must we be bubbling?
must you be bubbling?
must they be bubbling? 	must I have bubbled?
must you have bubbled?
must she have bubbled?
must we have bubbled?
must you have bubbled?
must they have bubbled? 	must I have been bubbling?
must you have been bubbling?
must she have been bubbling?
must we have been bubbling?
must you have been bubbling?
must they have been bubbling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not bubble?
must you not bubble?
must she not bubble?
must we not bubble?
must you not bubble?
must they not bubble? 	must I not be bubbling?
must you not be bubbling?
must she not be bubbling?
must we not be bubbling?
must you not be bubbling?
must they not be bubbling? 	must I not have bubbled?
must you not have bubbled?
must she not have bubbled?
must we not have bubbled?
must you not have bubbled?
must they not have bubbled? 	must I not have been bubbling?
must you not have been bubbling?
must she not have been bubbling?
must we not have been bubbling?
must you not have been bubbling?
must they not have been bubbling?