C111123313121111121111331333133313331323231333133313121133133312323221321   >>    C11112331312111112111133133313331333132323133313331312113313331232322132   <<    C111123313121111121111331333133313331323231333133313121133133312323221323   >>      C111123313121111121111331333133313331323231333133313121133133312323221322   >>