must green
Regular verb: green - greened- greened

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must green
you must green
he must green
we must green
you must green
they must green 	I must be greening
you must be greening
he must be greening
we must be greening
you must be greening
they must be greening	I must have greened
you must have greened
he must have greened
we must have greened
you must have greened
they must have greened	I must have been greening
you must have been greening
he must have been greening
we must have been greening
you must have been greening
they must have been greening	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I must not green
you must not green
he must not green
we must not green
you must not green
they must not green 	I must not be greening
you must not be greening
he must not be greening
we must not be greening
you must not be greening
they must not be greening	I must not have greened
you must not have greened
he must not have greened
we must not have greened
you must not have greened
they must not have greened	I must not have been greening
you must not have been greening
he must not have been greening
we must not have been greening
you must not have been greening
they must not have been greening	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I green?
must you green?
must he green?
must we green?
must you green?
must they green? 	must I be greening?
must you be greening?
must he be greening?
must we be greening?
must you be greening?
must they be greening? 	must I have greened?
must you have greened?
must he have greened?
must we have greened?
must you have greened?
must they have greened? 	must I have been greening?
must you have been greening?
must he have been greening?
must we have been greening?
must you have been greening?
must they have been greening? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
must I not green?
must you not green?
must he not green?
must we not green?
must you not green?
must they not green? 	must I not be greening?
must you not be greening?
must he not be greening?
must we not be greening?
must you not be greening?
must they not be greening? 	must I not have greened?
must you not have greened?
must he not have greened?
must we not have greened?
must you not have greened?
must they not have greened? 	must I not have been greening?
must you not have been greening?
must he not have been greening?
must we not have been greening?
must you not have been greening?
must they not have been greening?