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