C11111333133313232233133313331333132313331333133313211232223131   >>    C1111133313331323223313331333133313231333133313331321123222313   <<    C11111333133313232233133313331333132313331333133313211232223133   >>      C11111333133313232233133313331333132313331333133313211232223132   >>