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