C11112331312111112111133133313331323132313232233132322331121221   >>    C1111233131211111211113313331333132313231323223313232233112122   <<    C11112331312111112111133133313331323132313232233132322331121223   >>      C11112331312111112111133133313331323132313232233132322331121222   >>