C1231321123223331211111131211113313331333132313331333222133121212233111223131   >>    C123132112322333121111113121111331333133313231333133322213312121223311122313   <<    C1231321123223331211111131211113313331333132313331333222133121212233111223133   >>      C1231321123223331211111131211113313331333132313331333222133121212233111223132   >>