C11111333133313232233133313331333131133131121131211113311111221   >>    C1111133313331323223313331333133313113313112113121111331111122   <<    C11111333133313232233133313331333131133131121131211113311111223   >>      C11111333133313232233133313331333131133131121131211113311111222   >>