must ratoon
Regular verb: ratoon - ratooned- ratooned

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must ratoon
you must ratoon
he must ratoon
we must ratoon
you must ratoon
they must ratoon 	I must be ratooning
you must be ratooning
he must be ratooning
we must be ratooning
you must be ratooning
they must be ratooning	I must have ratooned
you must have ratooned
he must have ratooned
we must have ratooned
you must have ratooned
they must have ratooned	I must have been ratooning
you must have been ratooning
he must have been ratooning
we must have been ratooning
you must have been ratooning
they must have been ratooning	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't ratoon
you mustn't ratoon
he mustn't ratoon
we mustn't ratoon
you mustn't ratoon
they mustn't ratoon 	I mustn't be ratooning
you mustn't be ratooning
he mustn't be ratooning
we mustn't be ratooning
you mustn't be ratooning
they mustn't be ratooning	I mustn't have ratooned
you mustn't have ratooned
he mustn't have ratooned
we mustn't have ratooned
you mustn't have ratooned
they mustn't have ratooned	I mustn't have been ratooning
you mustn't have been ratooning
he mustn't have been ratooning
we mustn't have been ratooning
you mustn't have been ratooning
they mustn't have been ratooning	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I ratoon?
must you ratoon?
must he ratoon?
must we ratoon?
must you ratoon?
must they ratoon? 	must I be ratooning?
must you be ratooning?
must he be ratooning?
must we be ratooning?
must you be ratooning?
must they be ratooning? 	must I have ratooned?
must you have ratooned?
must he have ratooned?
must we have ratooned?
must you have ratooned?
must they have ratooned? 	must I have been ratooning?
must you have been ratooning?
must he have been ratooning?
must we have been ratooning?
must you have been ratooning?
must they have been ratooning? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I ratoon?
mustn't you ratoon?
mustn't he ratoon?
mustn't we ratoon?
mustn't you ratoon?
mustn't they ratoon? 	mustn't I be ratooning?
mustn't you be ratooning?
mustn't he be ratooning?
mustn't we be ratooning?
mustn't you be ratooning?
mustn't they be ratooning? 	mustn't I have ratooned?
mustn't you have ratooned?
mustn't he have ratooned?
mustn't we have ratooned?
mustn't you have ratooned?
mustn't they have ratooned? 	mustn't I have been ratooning?
mustn't you have been ratooning?
mustn't he have been ratooning?
mustn't we have been ratooning?
mustn't you have been ratooning?
mustn't they have been ratooning?