I may cumulate you may cumulate he may cumulate we may cumulate you may cumulate they may cumulate
V-ing form
I may be cumulating you may be cumulating he may be cumulating we may be cumulating you may be cumulating they may be cumulating
Perfect
I may have cumulated you may have cumulated he may have cumulated we may have cumulated you may have cumulated they may have cumulated
V-ing perfect
I may have been cumulating you may have been cumulating he may have been cumulating we may have been cumulating you may have been cumulating they may have been cumulating
Negation
Simple form
I mayn't cumulate you mayn't cumulate he mayn't cumulate we mayn't cumulate you mayn't cumulate they mayn't cumulate
V-ing form
I mayn't be cumulating you mayn't be cumulating he mayn't be cumulating we mayn't be cumulating you mayn't be cumulating they mayn't be cumulating
Perfect
I mayn't have cumulated you mayn't have cumulated he mayn't have cumulated we mayn't have cumulated you mayn't have cumulated they mayn't have cumulated
V-ing perfect
I mayn't have been cumulating you mayn't have been cumulating he mayn't have been cumulating we mayn't have been cumulating you mayn't have been cumulating they mayn't have been cumulating
Interrogative form
Simple form
may I cumulate? may you cumulate? may he cumulate? may we cumulate? may you cumulate? may they cumulate?
V-ing form
may I be cumulating? may you be cumulating? may he be cumulating? may we be cumulating? may you be cumulating? may they be cumulating?
Perfect
may I have cumulated? may you have cumulated? may he have cumulated? may we have cumulated? may you have cumulated? may they have cumulated?
V-ing perfect
may I have been cumulating? may you have been cumulating? may he have been cumulating? may we have been cumulating? may you have been cumulating? may they have been cumulating?
Interro-negative form
Simple form
mayn't I cumulate? mayn't you cumulate? mayn't he cumulate? mayn't we cumulate? mayn't you cumulate? mayn't they cumulate?
V-ing form
mayn't I be cumulating? mayn't you be cumulating? mayn't he be cumulating? mayn't we be cumulating? mayn't you be cumulating? mayn't they be cumulating?
Perfect
mayn't I have cumulated? mayn't you have cumulated? mayn't he have cumulated? mayn't we have cumulated? mayn't you have cumulated? mayn't they have cumulated?
V-ing perfect
mayn't I have been cumulating? mayn't you have been cumulating? mayn't he have been cumulating? mayn't we have been cumulating? mayn't you have been cumulating? mayn't they have been cumulating?