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