C1111233131211111211113313231333133313331323331333133313232233223331   >>    C111123313121111121111331323133313331333132333133313331323223322333   <<    C1111233131211111211113313231333133313331323331333133313232233223333   >>      C1111233131211111211113313231333133313331323331333133313232233223332   >>