must fordo
Irregular verb: fordo - fordid- fordone

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must fordo
you must fordo
he must fordo
we must fordo
you must fordo
they must fordo 	I must be fordoing
you must be fordoing
he must be fordoing
we must be fordoing
you must be fordoing
they must be fordoing	I must have fordone
you must have fordone
he must have fordone
we must have fordone
you must have fordone
they must have fordone	I must have been fordoing
you must have been fordoing
he must have been fordoing
we must have been fordoing
you must have been fordoing
they must have been fordoing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not fordo
you must not fordo
he must not fordo
we must not fordo
you must not fordo
they must not fordo 	I must not be fordoing
you must not be fordoing
he must not be fordoing
we must not be fordoing
you must not be fordoing
they must not be fordoing	I must not have fordone
you must not have fordone
he must not have fordone
we must not have fordone
you must not have fordone
they must not have fordone	I must not have been fordoing
you must not have been fordoing
he must not have been fordoing
we must not have been fordoing
you must not have been fordoing
they must not have been fordoing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I fordo?
must you fordo?
must he fordo?
must we fordo?
must you fordo?
must they fordo? 	must I be fordoing?
must you be fordoing?
must he be fordoing?
must we be fordoing?
must you be fordoing?
must they be fordoing? 	must I have fordone?
must you have fordone?
must he have fordone?
must we have fordone?
must you have fordone?
must they have fordone? 	must I have been fordoing?
must you have been fordoing?
must he have been fordoing?
must we have been fordoing?
must you have been fordoing?
must they have been fordoing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not fordo?
must you not fordo?
must he not fordo?
must we not fordo?
must you not fordo?
must they not fordo? 	must I not be fordoing?
must you not be fordoing?
must he not be fordoing?
must we not be fordoing?
must you not be fordoing?
must they not be fordoing? 	must I not have fordone?
must you not have fordone?
must he not have fordone?
must we not have fordone?
must you not have fordone?
must they not have fordone? 	must I not have been fordoing?
must you not have been fordoing?
must he not have been fordoing?
must we not have been fordoing?
must you not have been fordoing?
must they not have been fordoing?