C111123313121111121111331333133313331323231333133313331333131211211331111   >>    C11112331312111112111133133313331333132323133313331333133313121121133111   <<    C111123313121111121111331333133313331323231333133313331333131211211331113   >>      C111123313121111121111331333133313331323231333133313331333131211211331112   >>