I must preadopt you must preadopt he must preadopt we must preadopt you must preadopt they must preadopt
V-ing form
I must be preadopting you must be preadopting he must be preadopting we must be preadopting you must be preadopting they must be preadopting
Perfect
I must have preadopted you must have preadopted he must have preadopted we must have preadopted you must have preadopted they must have preadopted
V-ing perfect
I must have been preadopting you must have been preadopting he must have been preadopting we must have been preadopting you must have been preadopting they must have been preadopting
Negation
Simple form
I mustn't preadopt you mustn't preadopt he mustn't preadopt we mustn't preadopt you mustn't preadopt they mustn't preadopt
V-ing form
I mustn't be preadopting you mustn't be preadopting he mustn't be preadopting we mustn't be preadopting you mustn't be preadopting they mustn't be preadopting
Perfect
I mustn't have preadopted you mustn't have preadopted he mustn't have preadopted we mustn't have preadopted you mustn't have preadopted they mustn't have preadopted
V-ing perfect
I mustn't have been preadopting you mustn't have been preadopting he mustn't have been preadopting we mustn't have been preadopting you mustn't have been preadopting they mustn't have been preadopting
Interrogative form
Simple form
must I preadopt? must you preadopt? must he preadopt? must we preadopt? must you preadopt? must they preadopt?
V-ing form
must I be preadopting? must you be preadopting? must he be preadopting? must we be preadopting? must you be preadopting? must they be preadopting?
Perfect
must I have preadopted? must you have preadopted? must he have preadopted? must we have preadopted? must you have preadopted? must they have preadopted?
V-ing perfect
must I have been preadopting? must you have been preadopting? must he have been preadopting? must we have been preadopting? must you have been preadopting? must they have been preadopting?
Interro-negative form
Simple form
mustn't I preadopt? mustn't you preadopt? mustn't he preadopt? mustn't we preadopt? mustn't you preadopt? mustn't they preadopt?
V-ing form
mustn't I be preadopting? mustn't you be preadopting? mustn't he be preadopting? mustn't we be preadopting? mustn't you be preadopting? mustn't they be preadopting?
Perfect
mustn't I have preadopted? mustn't you have preadopted? mustn't he have preadopted? mustn't we have preadopted? mustn't you have preadopted? mustn't they have preadopted?
V-ing perfect
mustn't I have been preadopting? mustn't you have been preadopting? mustn't he have been preadopting? mustn't we have been preadopting? mustn't you have been preadopting? mustn't they have been preadopting?