
Someone MUST.
Game of Thrones Season 1, Episode 8

an Unsullied MUST go
to the slave marts with a silver mark,
Game of Thrones Season 3, Episode 1

Very well, they MUST be destroyed.
The Big Bang Theory Season 3, Episode 5

you MUST enjoy life."
The Big Bang Theory Season 5, Episode 16

but first there MUST be sacrifices.
Game of Thrones Season 3, Episode 3