English verb conjugation
MUST CONSERVE

Regular verb: conserve - conserved - conserved

Affirmation

Simple form	V-ing form
I must conserve you must conserve he must conserve we must conserve you must conserve they must conserve	I must be conserving you must be conserving he must be conserving we must be conserving you must be conserving they must be conserving
Perfect	V-ing perfect
I must have conserved you must have conserved he must have conserved we must have conserved you must have conserved they must have conserved	I must have been conserving you must have been conserving he must have been conserving we must have been conserving you must have been conserving they must have been conserving

Negation

Simple form	V-ing form
I mustn't conserve you mustn't conserve he mustn't conserve we mustn't conserve you mustn't conserve they mustn't conserve	I mustn't be conserving you mustn't be conserving he mustn't be conserving we mustn't be conserving you mustn't be conserving they mustn't be conserving
Perfect	V-ing perfect
I mustn't have conserved you mustn't have conserved he mustn't have conserved we mustn't have conserved you mustn't have conserved they mustn't have conserved	I mustn't have been conserving you mustn't have been conserving he mustn't have been conserving we mustn't have been conserving you mustn't have been conserving they mustn't have been conserving

Interrogative form

Simple form	V-ing form
must I conserve? must you conserve? must he conserve? must we conserve? must you conserve? must they conserve?	must I be conserving? must you be conserving? must he be conserving? must we be conserving? must you be conserving? must they be conserving?
Perfect	V-ing perfect
must I have conserved? must you have conserved? must he have conserved? must we have conserved? must you have conserved? must they have conserved?	must I have been conserving? must you have been conserving? must he have been conserving? must we have been conserving? must you have been conserving? must they have been conserving?

Interro-negative form

Simple form	V-ing form
mustn't I conserve? mustn't you conserve? mustn't he conserve? mustn't we conserve? mustn't you conserve? mustn't they conserve?	mustn't I be conserving? mustn't you be conserving? mustn't he be conserving? mustn't we be conserving? mustn't you be conserving? mustn't they be conserving?
Perfect	V-ing perfect
mustn't I have conserved? mustn't you have conserved? mustn't he have conserved? mustn't we have conserved? mustn't you have conserved? mustn't they have conserved?	mustn't I have been conserving? mustn't you have been conserving? mustn't he have been conserving? mustn't we have been conserving? mustn't you have been conserving? mustn't they have been conserving?