UEXF
     +---------
EETT | UELENRXC
      -TEHFH
       =====
        EXPMR
       -RETEH
        =====
         XHHLX
        -UEHLC
         =====
          FCCXC
         -HEXNC
          =====
            XNC

base: 12
letters: CEFHLMNPRTUX
difficulty: easy