Lost in Underground (šifre)

Lost in Underground

Level Code 
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01  BTFRAESQ 
02  BFVRDAEW 
03  CFSRDAWL 
04  NBVFSEDA 
05  BZGTRADE 
06  ZGRFEDAW 
07  NBGVFAOK 
08  BHZGTREW 
09  MLNJVGVG 
10  PQGARCXF 
11  NVSFRWAQ 
12  VGDFIKJH