We used a (very) ffine cipher for the following text.

TRIR MDRQ RKAR ORUR LKVE LMFD PHAR VEHA RDHV EYER QDVN HMZT FHFH
KNOR SKFK KARN SDQR EHDK ZVUN KFAY EVLR ROKV KARK ADEO UMVV EIRS
LAUV EPVE RDSU VEPF KDVS
