C1231321123223331211111131211113313331333132313332323232212221311   >>    C123132112322333121111113121111331333133313231333232323221222131   <<    C1231321123223331211111131211113313331333132313332323232212221313   >>      C1231321123223331211111131211113313331333132313332323232212221312   >>