C1231321123223331211111131211113313331333132313331333232233121222121131233131   >>    C123132112322333121111113121111331333133313231333133323223312122212113123313   <<    C1231321123223331211111131211113313331333132313331333232233121222121131233133   >>      C1231321123223331211111131211113313331333132313331333232233121222121131233132   >>