C1231321123223331211111131211113313331333132313332323232213123221221   >>    C123132112322333121111113121111331333133313231333232323221312322122   <<    C1231321123223331211111131211113313331333132313332323232213123221223   >>      C1231321123223331211111131211113313331333132313332323232213123221222   >>