must bull bull
Regular verb: bull bull - bull bulled- bull bulled

, this verb may not exist. Conjugation is given as example.

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must bull bull
you must bull bull
she must bull bull
we must bull bull
you must bull bull
they must bull bull 	I must be bull bulling
you must be bull bulling
she must be bull bulling
we must be bull bulling
you must be bull bulling
they must be bull bulling	I must have bull bulled
you must have bull bulled
she must have bull bulled
we must have bull bulled
you must have bull bulled
they must have bull bulled	I must have been bull bulling
you must have been bull bulling
she must have been bull bulling
we must have been bull bulling
you must have been bull bulling
they must have been bull bulling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't bull bull
you mustn't bull bull
she mustn't bull bull
we mustn't bull bull
you mustn't bull bull
they mustn't bull bull 	I mustn't be bull bulling
you mustn't be bull bulling
she mustn't be bull bulling
we mustn't be bull bulling
you mustn't be bull bulling
they mustn't be bull bulling	I mustn't have bull bulled
you mustn't have bull bulled
she mustn't have bull bulled
we mustn't have bull bulled
you mustn't have bull bulled
they mustn't have bull bulled	I mustn't have been bull bulling
you mustn't have been bull bulling
she mustn't have been bull bulling
we mustn't have been bull bulling
you mustn't have been bull bulling
they mustn't have been bull bulling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I bull bull?
must you bull bull?
must she bull bull?
must we bull bull?
must you bull bull?
must they bull bull? 	must I be bull bulling?
must you be bull bulling?
must she be bull bulling?
must we be bull bulling?
must you be bull bulling?
must they be bull bulling? 	must I have bull bulled?
must you have bull bulled?
must she have bull bulled?
must we have bull bulled?
must you have bull bulled?
must they have bull bulled? 	must I have been bull bulling?
must you have been bull bulling?
must she have been bull bulling?
must we have been bull bulling?
must you have been bull bulling?
must they have been bull bulling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I bull bull?
mustn't you bull bull?
mustn't she bull bull?
mustn't we bull bull?
mustn't you bull bull?
mustn't they bull bull? 	mustn't I be bull bulling?
mustn't you be bull bulling?
mustn't she be bull bulling?
mustn't we be bull bulling?
mustn't you be bull bulling?
mustn't they be bull bulling? 	mustn't I have bull bulled?
mustn't you have bull bulled?
mustn't she have bull bulled?
mustn't we have bull bulled?
mustn't you have bull bulled?
mustn't they have bull bulled? 	mustn't I have been bull bulling?
mustn't you have been bull bulling?
mustn't she have been bull bulling?
mustn't we have been bull bulling?
mustn't you have been bull bulling?
mustn't they have been bull bulling?