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