????????
      +---------
QRTQQ | THGUNRNN
       -FUGFF
        =====
         MEHFR
        -HMJGG
         =====
          FEGUN
         -QRTQQ
          =====
           GTMTN
          -RUQNN
           =====
           ?????

base: 11
letters: EFGHJMNQRTU
difficulty: medium