C11111333133313232233133313331333133313331311331333112113313111221   >>    C1111133313331323223313331333133313331333131133133311211331311122   <<    C11111333133313232233133313331333133313331311331333112113313111223   >>      C11111333133313232233133313331333133313331311331333112113313111222   >>