UN6H2N2XP6ZQNZRYIBOJHO6R6E6BITXH4YDY4STHGSLIY5Z6YVFAC
TJPIS3UPRE4ZIPXGRO7B4KOPR7P6UDYWUKCNY6UHJQEQDXWS4XVAC
3HZY24CX4U2TO74HOY4YX3LBJIYF4DLXHCIY7J2RASAC4COMSMZAC
ODNCGFQ5FPKFI624BVMLW7PJ2EFJOR3TY66OCZM42UNNTWBCF2TQC
print STDERR "index\n";