I must devote you must devote he must devote we must devote you must devote they must devote
V-ing form
I must be devoting you must be devoting he must be devoting we must be devoting you must be devoting they must be devoting
Perfect
I must have devoted you must have devoted he must have devoted we must have devoted you must have devoted they must have devoted
V-ing perfect
I must have been devoting you must have been devoting he must have been devoting we must have been devoting you must have been devoting they must have been devoting
Negation
Simple form
I must not devote you must not devote he must not devote we must not devote you must not devote they must not devote
V-ing form
I must not be devoting you must not be devoting he must not be devoting we must not be devoting you must not be devoting they must not be devoting
Perfect
I must not have devoted you must not have devoted he must not have devoted we must not have devoted you must not have devoted they must not have devoted
V-ing perfect
I must not have been devoting you must not have been devoting he must not have been devoting we must not have been devoting you must not have been devoting they must not have been devoting
Interrogative form
Simple form
must I devote? must you devote? must he devote? must we devote? must you devote? must they devote?
V-ing form
must I be devoting? must you be devoting? must he be devoting? must we be devoting? must you be devoting? must they be devoting?
Perfect
must I have devoted? must you have devoted? must he have devoted? must we have devoted? must you have devoted? must they have devoted?
V-ing perfect
must I have been devoting? must you have been devoting? must he have been devoting? must we have been devoting? must you have been devoting? must they have been devoting?
Interro-negative form
Simple form
must I not devote? must you not devote? must he not devote? must we not devote? must you not devote? must they not devote?
V-ing form
must I not be devoting? must you not be devoting? must he not be devoting? must we not be devoting? must you not be devoting? must they not be devoting?
Perfect
must I not have devoted? must you not have devoted? must he not have devoted? must we not have devoted? must you not have devoted? must they not have devoted?
V-ing perfect
must I not have been devoting? must you not have been devoting? must he not have been devoting? must we not have been devoting? must you not have been devoting? must they not have been devoting?