????????
      ----------
EYUYF ) YWJWXEYY
       -XHYHW
        =====
        EYUYUE
       -EXEUPE
        ======
         EYUYHY
        -EXEUPE
         ======
          EYWUXY
         -EXEUPE
          ======
          ??????

base: 10
symbols: EFHJPRUWXY
difficulty: medium
missing: R