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