????????
      ----------
WHHRG ) HHGWTNYH
       -THYWA
        =====
        RHYNUN
       -RUHGGX
        ======
         WYWYGY
        -WUHAXX
         ======
          AXGAXH
         -AWHXHG
          ======
          ??????

base: 10
symbols: AGHNRTUWXY
difficulty: medium