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