HFG
       -----------
FQPTHP ) YWGYFHYHH
        -GQXYQJX
         =======
          HWTJFYH
         -HXPPFQX
          =======
           WHGTFHH
          -WYPWJTX
           =======
             QQQPH

base: 10
symbols: FGHJPQTWXY
difficulty: intermediate
restrictions: no multiplication