C11111333133313232233133313331333133313231322321111331323221211121   >>    C1111133313331323223313331333133313331323132232111133132322121112   <<    C11111333133313232233133313331333133313231322321111331323221211123   >>      C11111333133313232233133313331333133313231322321111331323221211122   >>