C11111333133313232233133313331333131133131121131211113313311231   >>    C1111133313331323223313331333133313113313112113121111331331123   <<    C11111333133313232233133313331333131133131121131211113313311233   >>      C11111333133313232233133313331333131133131121131211113313311232   >>