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