TTMY
      +---------
YNYYT | THJPRTQR
       -TNTMN
        =====
         TMRRT
        -TNTMN
         =====
          MYQTQ
         -MNFYT
          =====
           YYPPR
          -YNYYT
           =====
            YJJW

base: 12
letters: FHJMNPQRTWXY
difficulty: medium
missing: X