I must recover you must recover he must recover we must recover you must recover they must recover
V-ing form
I must be recovering you must be recovering he must be recovering we must be recovering you must be recovering they must be recovering
Perfect
I must have recovered you must have recovered he must have recovered we must have recovered you must have recovered they must have recovered
V-ing perfect
I must have been recovering you must have been recovering he must have been recovering we must have been recovering you must have been recovering they must have been recovering
Negation
Simple form
I must not recover you must not recover he must not recover we must not recover you must not recover they must not recover
V-ing form
I must not be recovering you must not be recovering he must not be recovering we must not be recovering you must not be recovering they must not be recovering
Perfect
I must not have recovered you must not have recovered he must not have recovered we must not have recovered you must not have recovered they must not have recovered
V-ing perfect
I must not have been recovering you must not have been recovering he must not have been recovering we must not have been recovering you must not have been recovering they must not have been recovering
Interrogative form
Simple form
must I recover? must you recover? must he recover? must we recover? must you recover? must they recover?
V-ing form
must I be recovering? must you be recovering? must he be recovering? must we be recovering? must you be recovering? must they be recovering?
Perfect
must I have recovered? must you have recovered? must he have recovered? must we have recovered? must you have recovered? must they have recovered?
V-ing perfect
must I have been recovering? must you have been recovering? must he have been recovering? must we have been recovering? must you have been recovering? must they have been recovering?
Interro-negative form
Simple form
must I not recover? must you not recover? must he not recover? must we not recover? must you not recover? must they not recover?
V-ing form
must I not be recovering? must you not be recovering? must he not be recovering? must we not be recovering? must you not be recovering? must they not be recovering?
Perfect
must I not have recovered? must you not have recovered? must he not have recovered? must we not have recovered? must you not have recovered? must they not have recovered?
V-ing perfect
must I not have been recovering? must you not have been recovering? must he not have been recovering? must we not have been recovering? must you not have been recovering? must they not have been recovering?