must jumble
Regular verb: jumble - jumbled- jumbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must jumble
you must jumble
he must jumble
we must jumble
you must jumble
they must jumble 	I must be jumbling
you must be jumbling
he must be jumbling
we must be jumbling
you must be jumbling
they must be jumbling	I must have jumbled
you must have jumbled
he must have jumbled
we must have jumbled
you must have jumbled
they must have jumbled	I must have been jumbling
you must have been jumbling
he must have been jumbling
we must have been jumbling
you must have been jumbling
they must have been jumbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not jumble
you must not jumble
he must not jumble
we must not jumble
you must not jumble
they must not jumble 	I must not be jumbling
you must not be jumbling
he must not be jumbling
we must not be jumbling
you must not be jumbling
they must not be jumbling	I must not have jumbled
you must not have jumbled
he must not have jumbled
we must not have jumbled
you must not have jumbled
they must not have jumbled	I must not have been jumbling
you must not have been jumbling
he must not have been jumbling
we must not have been jumbling
you must not have been jumbling
they must not have been jumbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I jumble?
must you jumble?
must he jumble?
must we jumble?
must you jumble?
must they jumble? 	must I be jumbling?
must you be jumbling?
must he be jumbling?
must we be jumbling?
must you be jumbling?
must they be jumbling? 	must I have jumbled?
must you have jumbled?
must he have jumbled?
must we have jumbled?
must you have jumbled?
must they have jumbled? 	must I have been jumbling?
must you have been jumbling?
must he have been jumbling?
must we have been jumbling?
must you have been jumbling?
must they have been jumbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not jumble?
must you not jumble?
must he not jumble?
must we not jumble?
must you not jumble?
must they not jumble? 	must I not be jumbling?
must you not be jumbling?
must he not be jumbling?
must we not be jumbling?
must you not be jumbling?
must they not be jumbling? 	must I not have jumbled?
must you not have jumbled?
must he not have jumbled?
must we not have jumbled?
must you not have jumbled?
must they not have jumbled? 	must I not have been jumbling?
must you not have been jumbling?
must he not have been jumbling?
must we not have been jumbling?
must you not have been jumbling?
must they not have been jumbling?