must waddle
Regular verb: waddle - waddled- waddled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must waddle
you must waddle
he must waddle
we must waddle
you must waddle
they must waddle 	I must be waddling
you must be waddling
he must be waddling
we must be waddling
you must be waddling
they must be waddling	I must have waddled
you must have waddled
he must have waddled
we must have waddled
you must have waddled
they must have waddled	I must have been waddling
you must have been waddling
he must have been waddling
we must have been waddling
you must have been waddling
they must have been waddling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't waddle
you mustn't waddle
he mustn't waddle
we mustn't waddle
you mustn't waddle
they mustn't waddle 	I mustn't be waddling
you mustn't be waddling
he mustn't be waddling
we mustn't be waddling
you mustn't be waddling
they mustn't be waddling	I mustn't have waddled
you mustn't have waddled
he mustn't have waddled
we mustn't have waddled
you mustn't have waddled
they mustn't have waddled	I mustn't have been waddling
you mustn't have been waddling
he mustn't have been waddling
we mustn't have been waddling
you mustn't have been waddling
they mustn't have been waddling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I waddle?
must you waddle?
must he waddle?
must we waddle?
must you waddle?
must they waddle? 	must I be waddling?
must you be waddling?
must he be waddling?
must we be waddling?
must you be waddling?
must they be waddling? 	must I have waddled?
must you have waddled?
must he have waddled?
must we have waddled?
must you have waddled?
must they have waddled? 	must I have been waddling?
must you have been waddling?
must he have been waddling?
must we have been waddling?
must you have been waddling?
must they have been waddling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I waddle?
mustn't you waddle?
mustn't he waddle?
mustn't we waddle?
mustn't you waddle?
mustn't they waddle? 	mustn't I be waddling?
mustn't you be waddling?
mustn't he be waddling?
mustn't we be waddling?
mustn't you be waddling?
mustn't they be waddling? 	mustn't I have waddled?
mustn't you have waddled?
mustn't he have waddled?
mustn't we have waddled?
mustn't you have waddled?
mustn't they have waddled? 	mustn't I have been waddling?
mustn't you have been waddling?
mustn't he have been waddling?
mustn't we have been waddling?
mustn't you have been waddling?
mustn't they have been waddling?