????????
      +---------
QLULU | UPULLHUT
       -NEJEJ
        =====
        HHLJHH
       -EJQTQT
        ======
         PRHNRU
        -PPNHNH
         ======
          PCCUNT
         -PPNHNH
          ======
          ??????

base: 11
letters: CEHJLNPQRTU
difficulty: intermediate