C12313211232233312111111312111133133313331323133323132323322133223331311   >>    C1231321123223331211111131211113313331333132313332313232332213322333131   <<    C12313211232233312111111312111133133313331323133323132323322133223331313   >>      C12313211232233312111111312111133133313331323133323132323322133223331312   >>