C11111333133313232233133313331333133313231322321111331323223313111211   >>    C1111133313331323223313331333133313331323132232111133132322331311121   <<    C11111333133313232233133313331333133313231322321111331323223313111213   >>      C11111333133313232233133313331333133313231322321111331323223313111212   >>