C1231321123223331211111131211113313331333132313332223312131113223221   >>    C123132112322333121111113121111331333133313231333222331213111322322   <<    C1231321123223331211111131211113313331333132313332223312131113223223   >>      C1231321123223331211111131211113313331333132313332223312131113223222   >>