C11112331333132311331333133313331312111113311212111133131212231   >>    C1111233133313231133133313331333131211111331121211113313121223   <<    C11112331333132311331333133313331312111113311212111133131212233   >>      C11112331333132311331333133313331312111113311212111133131212232   >>