C1231321123223331211111131211113313331333132313331333112233232123121221111   >>    C123132112322333121111113121111331333133313231333133311223323212312122111   <<    C1231321123223331211111131211113313331333132313331333112233232123121221113   >>      C1231321123223331211111131211113313331333132313331333112233232123121221112   >>