I may contain you may contain he may contain we may contain you may contain they may contain
V-ing form
I may be containing you may be containing he may be containing we may be containing you may be containing they may be containing
Perfect
I may have contained you may have contained he may have contained we may have contained you may have contained they may have contained
V-ing perfect
I may have been containing you may have been containing he may have been containing we may have been containing you may have been containing they may have been containing
Negation
Simple form
I may not contain you may not contain he may not contain we may not contain you may not contain they may not contain
V-ing form
I may not be containing you may not be containing he may not be containing we may not be containing you may not be containing they may not be containing
Perfect
I may not have contained you may not have contained he may not have contained we may not have contained you may not have contained they may not have contained
V-ing perfect
I may not have been containing you may not have been containing he may not have been containing we may not have been containing you may not have been containing they may not have been containing
Interrogative form
Simple form
may I contain? may you contain? may he contain? may we contain? may you contain? may they contain?
V-ing form
may I be containing? may you be containing? may he be containing? may we be containing? may you be containing? may they be containing?
Perfect
may I have contained? may you have contained? may he have contained? may we have contained? may you have contained? may they have contained?
V-ing perfect
may I have been containing? may you have been containing? may he have been containing? may we have been containing? may you have been containing? may they have been containing?
Interro-negative form
Simple form
may I not contain? may you not contain? may he not contain? may we not contain? may you not contain? may they not contain?
V-ing form
may I not be containing? may you not be containing? may he not be containing? may we not be containing? may you not be containing? may they not be containing?
Perfect
may I not have contained? may you not have contained? may he not have contained? may we not have contained? may you not have contained? may they not have contained?
V-ing perfect
may I not have been containing? may you not have been containing? may he not have been containing? may we not have been containing? may you not have been containing? may they not have been containing?