??????
    --------
EGW ) LYXNXW
     -GWN
      ===
       JPN
      -WXM
       ===
       PNNX
      -PGWC
       ====
        PWGW
       -PXEM
        ====
        ????

base: 12
symbols: CEGHJLMNPWXY
difficulty: hard
missing: H