C1111233131211111211113313231333133313331323221211111211111321322321   >>    C111123313121111121111331323133313331333132322121111121111132132232   <<    C1111233131211111211113313231333133313331323221211111211111321322323   >>      C1111233131211111211113313231333133313331323221211111211111321322322   >>