must bumble
Verbe régulier : bumble - bumbled- bumbled
Traduction française : bafouiller 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must bumble
you must bumble
he must bumble
we must bumble
you must bumble
they must bumble 	I must be bumbling
you must be bumbling
he must be bumbling
we must be bumbling
you must be bumbling
they must be bumbling	I must have bumbled
you must have bumbled
he must have bumbled
we must have bumbled
you must have bumbled
they must have bumbled	I must have been bumbling
you must have been bumbling
he must have been bumbling
we must have been bumbling
you must have been bumbling
they must have been bumbling	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I must not bumble
you must not bumble
he must not bumble
we must not bumble
you must not bumble
they must not bumble 	I must not be bumbling
you must not be bumbling
he must not be bumbling
we must not be bumbling
you must not be bumbling
they must not be bumbling	I must not have bumbled
you must not have bumbled
he must not have bumbled
we must not have bumbled
you must not have bumbled
they must not have bumbled	I must not have been bumbling
you must not have been bumbling
he must not have been bumbling
we must not have been bumbling
you must not have been bumbling
they must not have been bumbling	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I bumble?
must you bumble?
must he bumble?
must we bumble?
must you bumble?
must they bumble? 	must I be bumbling?
must you be bumbling?
must he be bumbling?
must we be bumbling?
must you be bumbling?
must they be bumbling? 	must I have bumbled?
must you have bumbled?
must he have bumbled?
must we have bumbled?
must you have bumbled?
must they have bumbled? 	must I have been bumbling?
must you have been bumbling?
must he have been bumbling?
must we have been bumbling?
must you have been bumbling?
must they have been bumbling? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
must I not bumble?
must you not bumble?
must he not bumble?
must we not bumble?
must you not bumble?
must they not bumble? 	must I not be bumbling?
must you not be bumbling?
must he not be bumbling?
must we not be bumbling?
must you not be bumbling?
must they not be bumbling? 	must I not have bumbled?
must you not have bumbled?
must he not have bumbled?
must we not have bumbled?
must you not have bumbled?
must they not have bumbled? 	must I not have been bumbling?
must you not have been bumbling?
must he not have been bumbling?
must we not have been bumbling?
must you not have been bumbling?
must they not have been bumbling?