I might birl you might birl she might birl we might birl you might birl they might birl
V-ing form
I might be birling you might be birling she might be birling we might be birling you might be birling they might be birling
Perfect
I might have birled you might have birled she might have birled we might have birled you might have birled they might have birled
V-ing perfect
I might have been birling you might have been birling she might have been birling we might have been birling you might have been birling they might have been birling
Negation
Simple form
I mightn't birl you mightn't birl she mightn't birl we mightn't birl you mightn't birl they mightn't birl
V-ing form
I mightn't be birling you mightn't be birling she mightn't be birling we mightn't be birling you mightn't be birling they mightn't be birling
Perfect
I mightn't have birled you mightn't have birled she mightn't have birled we mightn't have birled you mightn't have birled they mightn't have birled
V-ing perfect
I mightn't have been birling you mightn't have been birling she mightn't have been birling we mightn't have been birling you mightn't have been birling they mightn't have been birling
Interrogative form
Simple form
might I birl? might you birl? might she birl? might we birl? might you birl? might they birl?
V-ing form
might I be birling? might you be birling? might she be birling? might we be birling? might you be birling? might they be birling?
Perfect
might I have birled? might you have birled? might she have birled? might we have birled? might you have birled? might they have birled?
V-ing perfect
might I have been birling? might you have been birling? might she have been birling? might we have been birling? might you have been birling? might they have been birling?
Interro-negative form
Simple form
mightn't I birl? mightn't you birl? mightn't she birl? mightn't we birl? mightn't you birl? mightn't they birl?
V-ing form
mightn't I be birling? mightn't you be birling? mightn't she be birling? mightn't we be birling? mightn't you be birling? mightn't they be birling?
Perfect
mightn't I have birled? mightn't you have birled? mightn't she have birled? mightn't we have birled? mightn't you have birled? mightn't they have birled?
V-ing perfect
mightn't I have been birling? mightn't you have been birling? mightn't she have been birling? mightn't we have been birling? mightn't you have been birling? mightn't they have been birling?