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