C111123313121111121111331333133313331323231333133313331333131133133313223211   >>    C11112331312111112111133133313331333132323133313331333133313113313331322321   <<    C111123313121111121111331333133313331323231333133313331333131133133313223213   >>      C111123313121111121111331333133313331323231333133313331333131133133313223212   >>