C1231321123223331211111131211113313331333133313223223312221221312321   >>    C123132112322333121111113121111331333133313331322322331222122131232   <<    C1231321123223331211111131211113313331333133313223223312221221312323   >>      C1231321123223331211111131211113313331333133313223223312221221312322   >>