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It's a tricky one for sure. Here's an upside down hint:

˙lǝʌǝl ǝɥʇ pǝʌlos ǝʌɐɥ llᴉʍ noʎ 'ʎɐʍɐ ʎnƃ ǝldɹnd ǝɥʇ ƃuᴉɹɐɔs ʇnoɥʇᴉʍ op oʇ ʍoɥ ʇno ǝɹnƃᴉɟ noʎ ɟᴉ ɥɔᴉɥʍ 'dn puǝ ʇsnɯ slɐʇsʎɹɔ ǝɥʇ ɟo ǝuo ǝɹǝɥʍ noʎ llǝʇ llᴉʍ sᴉɥ┴ ˙ʇᴉxǝ ǝɥʇ uo puɐl oʇ ɯoɹɟ ǝɯoɔ ǝʌɐɥ plnoɔ ʇᴉ ǝɔɐld ǝuo ʎluo oslɐ sᴉ ǝɹǝɥ┴ ˙ʇᴉxǝ ǝɥʇ uo puɐl uɐɔ ǝɹnʇɐǝɹɔ ǝɥʇ ʇɐɥʇ ʎɐʍ ǝuo ʎluo sᴉ ǝɹǝɥ┴