must bumble
Verbo regolare: bumble - bumbled- bumbled

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must bumble
you must bumble
she must bumble
we must bumble
you must bumble
they must bumble 	I must be bumbling
you must be bumbling
she must be bumbling
we must be bumbling
you must be bumbling
they must be bumbling	I must have bumbled
you must have bumbled
she 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
she must have been bumbling
we must have been bumbling
you must have been bumbling
they must have been bumbling	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not bumble
you must not bumble
she 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
she 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
she 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
she must not have been bumbling
we must not have been bumbling
you must not have been bumbling
they must not have been bumbling	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I bumble?
must you bumble?
must she bumble?
must we bumble?
must you bumble?
must they bumble? 	must I be bumbling?
must you be bumbling?
must she be bumbling?
must we be bumbling?
must you be bumbling?
must they be bumbling? 	must I have bumbled?
must you have bumbled?
must she 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 she have been bumbling?
must we have been bumbling?
must you have been bumbling?
must they have been bumbling? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not bumble?
must you not bumble?
must she 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 she 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 she 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 she not have been bumbling?
must we not have been bumbling?
must you not have been bumbling?
must they not have been bumbling?