C111112111133131121133133313331323133313221211111333133313232213221   >>    C11111211113313112113313331333132313331322121111133313331323221322   <<    C111112111133131121133133313331323133313221211111333133313232213223   >>      C111112111133131121133133313331323133313221211111333133313232213222   >>