C1231321123223331211111131211113313331333132313331333232233121222212233211   >>    C123132112322333121111113121111331333133313231333133323223312122221223321   <<    C1231321123223331211111131211113313331333132313331333232233121222212233213   >>      C1231321123223331211111131211113313331333132313331333232233121222212233212   >>