Alice walked into the library where her friend Bob said he would meet her, but he was nowhere to be found. She waited a while, and very shortly grew bored. Looking around the room she saw there was a book lying open on a table by the wall on which a mirror was hung.
She looked through the book, but it had no pictures or conversation in it, and what is the use of a book without pictures or conversation? And furthermore, all the writing in it was backwards!
She sighed. "That's just like Bob" she thought to herself. "It's always ciphers with that guy. Why can't he ever leave me a normal note? Well the backwards part's easy enough," she thought. "I'll just hold it up to this mirror here, and then I can read it."
So she did, and this is what she read.
DJROK SDGER DJFJA DKTER KFVBL QOGIB VRIVK DCVBB JFGZQ QGIOW SFJKZ VWTYL HMIVK MTVQE DBEQS FKVLC EHTIP YDGML RBYQZ JRWZC IZUER GILQL RMLCU MDGIL VRIBW ORZKJ VGTKH QZXIV CJTUC XKSTK ZNDYW XXFFK SAMZM IJYST UTDYW XGIMG RMFAK QXHVY SAMBL WWRAI EIIVK NXZFP NKVOH YZZXL HSUUW GWLTY OUFWJ CSVFY HIIQP TXZAY OUIQV XEMYR RJVJR WRNSJ RGTEC MDWIJ DJVOL XDTSO OUZUZ FCSQC SZYJL NXZJO HUUYW XDTSO OUFKV LFFZU DNJPD MYZBX QZUYF MDGEG LLYGM MJYMT RGTZP COBIW KTTYW XDTSO EGTWQ IZUHU ORIQD OGNMA CFUCA MZYVI UKZCW KQLVV CKZCW KQLVV CKZCP URVZO HRTYQ CAXMP DWISB IXHTP RRIZD FJOMN EZRYW XHZIV DUEVK IOWZC SNIZK IRUIR RGCAD PEMEV GBSRD KRMIG RGCAP UTVLB VEIVK DCZBK BZFJL QDWZC XZLVL IYZIB XBUQM QMNYJ RBYAF QZOMA OZYRS QIBMZ DTYTC QTUYE HEUUW DCWIR CWYVB MDHIH HUOVK IZHIV CKZCX IZOEL UVMGK MJZQY OUZUZ FJNEW SAMYM SEWEZ DJROX CTLLY OUILZ UMHAU JCBCZ PKIGJ BZUVK QTVAO JJFJA DK
What message did Bob leave for Alice to read?