C111113331333132322331333133313331331121111121133131121133132223132211   >>    C11111333133313232233133313331333133112111112113313112113313222313221   <<    C111113331333132322331333133313331331121111121133131121133132223132213   >>      C111113331333132322331333133313331331121111121133131121133132223132212   >>