C1231321123223331211111131211113313331333132313332223312131233111   >>    C123132112322333121111113121111331333133313231333222331213123311   <<    C1231321123223331211111131211113313331333132313332223312131233113   >>      C1231321123223331211111131211113313331333132313332223312131233112   >>