????????
     +---------
RCTR | NTLXNXHR
      -LHHHC
       =====
        LNTRX
       -TRTNH
        =====
         CXLLH
        -NHNXN
         =====
          TRLLR
         -TRTNH
          =====
          ?????

base: 7
letters: CHLNRTX
difficulty: easy