must pony
Regular verb: pony - ponied- ponied

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must pony
you must pony
he must pony
we must pony
you must pony
they must pony 	I must be ponying
you must be ponying
he must be ponying
we must be ponying
you must be ponying
they must be ponying	I must have ponied
you must have ponied
he must have ponied
we must have ponied
you must have ponied
they must have ponied	I must have been ponying
you must have been ponying
he must have been ponying
we must have been ponying
you must have been ponying
they must have been ponying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mustn't pony
you mustn't pony
he mustn't pony
we mustn't pony
you mustn't pony
they mustn't pony 	I mustn't be ponying
you mustn't be ponying
he mustn't be ponying
we mustn't be ponying
you mustn't be ponying
they mustn't be ponying	I mustn't have ponied
you mustn't have ponied
he mustn't have ponied
we mustn't have ponied
you mustn't have ponied
they mustn't have ponied	I mustn't have been ponying
you mustn't have been ponying
he mustn't have been ponying
we mustn't have been ponying
you mustn't have been ponying
they mustn't have been ponying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I pony?
must you pony?
must he pony?
must we pony?
must you pony?
must they pony? 	must I be ponying?
must you be ponying?
must he be ponying?
must we be ponying?
must you be ponying?
must they be ponying? 	must I have ponied?
must you have ponied?
must he have ponied?
must we have ponied?
must you have ponied?
must they have ponied? 	must I have been ponying?
must you have been ponying?
must he have been ponying?
must we have been ponying?
must you have been ponying?
must they have been ponying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mustn't I pony?
mustn't you pony?
mustn't he pony?
mustn't we pony?
mustn't you pony?
mustn't they pony? 	mustn't I be ponying?
mustn't you be ponying?
mustn't he be ponying?
mustn't we be ponying?
mustn't you be ponying?
mustn't they be ponying? 	mustn't I have ponied?
mustn't you have ponied?
mustn't he have ponied?
mustn't we have ponied?
mustn't you have ponied?
mustn't they have ponied? 	mustn't I have been ponying?
mustn't you have been ponying?
mustn't he have been ponying?
mustn't we have been ponying?
mustn't you have been ponying?
mustn't they have been ponying?