The Riddler’s code, in full, from Batman : Eternal #15. Do you think you can crack it before Batwing does?

FFFXD VDGDD VFDAV VAFXF

VDAVA FVADA AGGGA VXXXD

XGVGA AVGAX DXVFV AXDAG

FXAVX FXGD AAFAD VAXGX

VVXVD FFDVA FDGVD AFXFF

DDVXG AXAXV FGGAG FDXXX

XXXXV AXFXA VXFAG XGXX

PS: Of course it’s not easy. But it’s not impossible.

EDIT: There was an error in this! One too many characters. I removed it- you’ll see now that there’s a four-letter group in row 3, where an extra “X” was placed by mistake. Sorry about that!