???????
     +--------
UMHY | MRLUNPX
      -MQJH
       ====
        RUPN
       -PMPR
        ====
        JXQJP
       -JHMNN
        =====
         JMJXX
        -JLQLP
         =====
         ?????

base: 11
letters: HJLMNPQRUXY
difficulty: medium