C11112331333132311331333133313331312111113311212111133131121132211   >>    C1111233133313231133133313331333131211111331121211113313112113221   <<    C11112331333132311331333133313331312111113311212111133131121132213   >>      C11112331333132311331333133313331312111113311212111133131121132212   >>