C1231321123223331211111131211113313331333132313332323232223221312311   >>    C123132112322333121111113121111331333133313231333232323222322131231   <<    C1231321123223331211111131211113313331333132313332323232223221312313   >>      C1231321123223331211111131211113313331333132313332323232223221312312   >>