C1111233131211111211113313331333133313221322121111331333131121231   >>    C111123313121111121111331333133313331322132212111133133313112123   <<    C1111233131211111211113313331333133313221322121111331333131121233   >>      C1111233131211111211113313331333133313221322121111331333131121232   >>