C11111333133313232233133313331333131121133131133133313231322313121   >>    C1111133313331323223313331333133313112113313113313331323132231312   <<    C11111333133313232233133313331333131121133131133133313231322313123   >>      C11111333133313232233133313331333131121133131133133313231322313122   >>