????????
      ----------
WFXYG ) QWYHJYXX
       -GNPQH
        =====
         GHXXY
        -WFXYG
         =====
         WMUUFX
        -WHGJRH
         ======
          RLRNLX
         -RPRYNH
          ======
          ??????

base: 15
symbols: FGHJLMNPQRTUWXY
difficulty: medium
missing: T