C1231321123223331211111131211113313331333132313331123311132231221   >>    C123132112322333121111113121111331333133313231333112331113223122   <<    C1231321123223331211111131211113313331333132313331123311132231223   >>      C1231321123223331211111131211113313331333132313331123311132231222   >>