C1231321123223331211111131211113313331333133313223223312221311233131   >>    C123132112322333121111113121111331333133313331322322331222131123313   <<    C1231321123223331211111131211113313331333133313223223312221311233133   >>      C1231321123223331211111131211113313331333133313223223312221311233132   >>