I might strengthen you might strengthen he might strengthen we might strengthen you might strengthen they might strengthen
V-ing form
I might be strengthening you might be strengthening he might be strengthening we might be strengthening you might be strengthening they might be strengthening
Perfect
I might have strengthened you might have strengthened he 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 he 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 he 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 he 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 he 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 he 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 he strengthen? might we strengthen? might you strengthen? might they strengthen?
V-ing form
might I be strengthening? might you be strengthening? might he be strengthening? might we be strengthening? might you be strengthening? might they be strengthening?
Perfect
might I have strengthened? might you have strengthened? might he 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 he 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 he 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 he 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 he 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 he have been strengthening? mightn't we have been strengthening? mightn't you have been strengthening? mightn't they have been strengthening?