Find the rule that is all correct on the left side, but none on the right side.
Raw text: (Orange, Yellow, Green, Cyan)
Left:
OGYCO
C
YYGG
GCOOOYGC
CCOCO
YCGCOCY
CCC
COCOCYY
CGCCCG
GG
Right:
O
GYCY
CGCGCO
CG
OOOCCC
YOOCCOYC
GGCCCCG
GC
YCGOOY
CCCYYY