import string
text = "Ysq xaxrv! W zsix yfi dmdxd kvaw obdvc! A'q oxrp jwvr loifq xatt pcm wixnk mgyk mids \n \
    uvtvkzby xabs, sil xabs yok rhmhzby xh wo nwll tgy ldusfbnx Jspox picvyvms. Zh'k nnlt fz' \n \
    Xvxwdxs Osgz bvwfk t mokod ntvkrgkl \n \
      \n \
    Xbfe zg ksfxtywfk rhu nwdp gxvvf yim uaty, ks ahpvtmper yfi zew t lriyl hk tncl \n \
      \n \
    Tym aep rmhx, bf pom'vx mhv tavlm tf qjevd tywk, wxgd ds s ChnTlpw qxlsruw abmh kvw \n \
    tajajs: \"Xvxwdzs qsn trv o bikd aer A atgt dm lmfx brgo\" egw I'cz zshd yfi mt pbty \n \
    ggqxmgzby. Em lods hsbgt. \n \
      \n \
    Sm llx pap, Gsq'l poiyarz hn fij rxqt gfgnxvt kvwvx hn ywk ghfplhwv, bgsgwjiw uy \n \
    Rqlmobszcf'w kxcvbl ecmimwlc. Dxeg of irx olh! \n \
      \n \
    Kmgveisdc, Ykeurai, Ukaergr, tgd Dolxaxw, kvw ghhlvgl hnwej ef xax iehwvgxt."

text.lower()
result = ""
for char in text:
    if not char.isspace() and char.isalpha():
        charPos = string.lowercase.index(char)
        newChar = string.lowercase[charPos-1]
        result += char
    else : result += newChar

print result