I may stockpile you may stockpile he may stockpile we may stockpile you may stockpile they may stockpile
V-ing form
I may be stockpiling you may be stockpiling he may be stockpiling we may be stockpiling you may be stockpiling they may be stockpiling
Perfect
I may have stockpiled you may have stockpiled he may have stockpiled we may have stockpiled you may have stockpiled they may have stockpiled
V-ing perfect
I may have been stockpiling you may have been stockpiling he may have been stockpiling we may have been stockpiling you may have been stockpiling they may have been stockpiling
Negation
Simple form
I may not stockpile you may not stockpile he may not stockpile we may not stockpile you may not stockpile they may not stockpile
V-ing form
I may not be stockpiling you may not be stockpiling he may not be stockpiling we may not be stockpiling you may not be stockpiling they may not be stockpiling
Perfect
I may not have stockpiled you may not have stockpiled he may not have stockpiled we may not have stockpiled you may not have stockpiled they may not have stockpiled
V-ing perfect
I may not have been stockpiling you may not have been stockpiling he may not have been stockpiling we may not have been stockpiling you may not have been stockpiling they may not have been stockpiling
Interrogative form
Simple form
may I stockpile? may you stockpile? may he stockpile? may we stockpile? may you stockpile? may they stockpile?
V-ing form
may I be stockpiling? may you be stockpiling? may he be stockpiling? may we be stockpiling? may you be stockpiling? may they be stockpiling?
Perfect
may I have stockpiled? may you have stockpiled? may he have stockpiled? may we have stockpiled? may you have stockpiled? may they have stockpiled?
V-ing perfect
may I have been stockpiling? may you have been stockpiling? may he have been stockpiling? may we have been stockpiling? may you have been stockpiling? may they have been stockpiling?
Interro-negative form
Simple form
may I not stockpile? may you not stockpile? may he not stockpile? may we not stockpile? may you not stockpile? may they not stockpile?
V-ing form
may I not be stockpiling? may you not be stockpiling? may he not be stockpiling? may we not be stockpiling? may you not be stockpiling? may they not be stockpiling?
Perfect
may I not have stockpiled? may you not have stockpiled? may he not have stockpiled? may we not have stockpiled? may you not have stockpiled? may they not have stockpiled?
V-ing perfect
may I not have been stockpiling? may you not have been stockpiling? may he not have been stockpiling? may we not have been stockpiling? may you not have been stockpiling? may they not have been stockpiling?