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