must farm
Regular verb: farm - farmed- farmed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must farm
you must farm
he must farm
we must farm
you must farm
they must farm 	I must be farming
you must be farming
he must be farming
we must be farming
you must be farming
they must be farming	I must have farmed
you must have farmed
he must have farmed
we must have farmed
you must have farmed
they must have farmed	I must have been farming
you must have been farming
he must have been farming
we must have been farming
you must have been farming
they must have been farming	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not farm
you must not farm
he must not farm
we must not farm
you must not farm
they must not farm 	I must not be farming
you must not be farming
he must not be farming
we must not be farming
you must not be farming
they must not be farming	I must not have farmed
you must not have farmed
he must not have farmed
we must not have farmed
you must not have farmed
they must not have farmed	I must not have been farming
you must not have been farming
he must not have been farming
we must not have been farming
you must not have been farming
they must not have been farming	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I farm?
must you farm?
must he farm?
must we farm?
must you farm?
must they farm? 	must I be farming?
must you be farming?
must he be farming?
must we be farming?
must you be farming?
must they be farming? 	must I have farmed?
must you have farmed?
must he have farmed?
must we have farmed?
must you have farmed?
must they have farmed? 	must I have been farming?
must you have been farming?
must he have been farming?
must we have been farming?
must you have been farming?
must they have been farming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not farm?
must you not farm?
must he not farm?
must we not farm?
must you not farm?
must they not farm? 	must I not be farming?
must you not be farming?
must he not be farming?
must we not be farming?
must you not be farming?
must they not be farming? 	must I not have farmed?
must you not have farmed?
must he not have farmed?
must we not have farmed?
must you not have farmed?
must they not have farmed? 	must I not have been farming?
must you not have been farming?
must he not have been farming?
must we not have been farming?
must you not have been farming?
must they not have been farming?