C111112111133131121133133313331333133313123221211113313232233132313221   >>    C11111211113313112113313331333133313331312322121111331323223313231322   <<    C111112111133131121133133313331333133313123221211113313232233132313223   >>      C111112111133131121133133313331333133313123221211113313232233132313222   >>