C11111333133313232233133313331333133313331312111133133312111111331333121221   >>    C1111133313331323223313331333133313331333131211113313331211111133133312122   <<    C11111333133313232233133313331333133313331312111133133312111111331333121223   >>      C11111333133313232233133313331333133313331312111133133312111111331333121222   >>