C111123313121111121111331333133313221333131121211113313233313331323132212321   >>    C11112331312111112111133133313331322133313112121111331323331333132313221232   <<    C111123313121111121111331333133313221333131121211113313233313331323132212323   >>      C111123313121111121111331333133313221333131121211113313233313331323132212322   >>