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