must marbleise
Regular verb: marbleise - marbleised- marbleised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must marbleise
you must marbleise
she must marbleise
we must marbleise
you must marbleise
they must marbleise 	I must be marbleising
you must be marbleising
she must be marbleising
we must be marbleising
you must be marbleising
they must be marbleising	I must have marbleised
you must have marbleised
she must have marbleised
we must have marbleised
you must have marbleised
they must have marbleised	I must have been marbleising
you must have been marbleising
she must have been marbleising
we must have been marbleising
you must have been marbleising
they must have been marbleising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not marbleise
you must not marbleise
she must not marbleise
we must not marbleise
you must not marbleise
they must not marbleise 	I must not be marbleising
you must not be marbleising
she must not be marbleising
we must not be marbleising
you must not be marbleising
they must not be marbleising	I must not have marbleised
you must not have marbleised
she must not have marbleised
we must not have marbleised
you must not have marbleised
they must not have marbleised	I must not have been marbleising
you must not have been marbleising
she must not have been marbleising
we must not have been marbleising
you must not have been marbleising
they must not have been marbleising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I marbleise?
must you marbleise?
must she marbleise?
must we marbleise?
must you marbleise?
must they marbleise? 	must I be marbleising?
must you be marbleising?
must she be marbleising?
must we be marbleising?
must you be marbleising?
must they be marbleising? 	must I have marbleised?
must you have marbleised?
must she have marbleised?
must we have marbleised?
must you have marbleised?
must they have marbleised? 	must I have been marbleising?
must you have been marbleising?
must she have been marbleising?
must we have been marbleising?
must you have been marbleising?
must they have been marbleising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not marbleise?
must you not marbleise?
must she not marbleise?
must we not marbleise?
must you not marbleise?
must they not marbleise? 	must I not be marbleising?
must you not be marbleising?
must she not be marbleising?
must we not be marbleising?
must you not be marbleising?
must they not be marbleising? 	must I not have marbleised?
must you not have marbleised?
must she not have marbleised?
must we not have marbleised?
must you not have marbleised?
must they not have marbleised? 	must I not have been marbleising?
must you not have been marbleising?
must she not have been marbleising?
must we not have been marbleising?
must you not have been marbleising?
must they not have been marbleising?