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