????????
      ----------
QUQME ) PWRNMJMU
       -JXEPE
        =====
         JNWTJ
        -MWUUY
         =====
          PENJM
         -JXEPE
          =====
           RYPTU
          -XYJXT
           =====
           ?????

base: 12
symbols: EJMNPQRTUWXY
difficulty: medium