C11111211113313112113313331333133313331312111133133313131133133313232213223311   >>    C1111121111331311211331333133313331333131211113313331313113313331323221322331   <<    C11111211113313112113313331333133313331312111133133313131133133313232213223313   >>      C11111211113313112113313331333133313331312111133133313131133133313232213223312   >>