TML
      +--------
RHXLE | LMJQRQW
       -MXLTW
        =====
         HRLTQ
        -JLGQJ
         =====
          QGHTW
         -EUUGR
          =====
          RGHRX

base: 13
letters: EGHJLMNQRTUWX
difficulty: hard
missing: N