C1111233131211111211113313331333133313331312331333132322333223231   >>    C111123313121111121111331333133313331333131233133313232233322323   <<    C1111233131211111211113313331333133313331312331333132322333223233   >>      C1111233131211111211113313331333133313331312331333132322333223232   >>