???????
      +--------
RYYYJ | RNLRYNT
       -RYYYJ
        =====
         GNFRN
        -RYYYJ
         =====
         YRJFLT
        -YYPCFL
         ======
         ??????

base: 11
letters: CFGJLNPRTUY
difficulty: medium
hints: T << U
missing: U