C11112331333132311331333133313331333132313121111331333132323133121   >>    C1111233133313231133133313331333133313231312111133133313232313312   <<    C11112331333132311331333133313331333132313121111331333132323133123   >>      C11112331333132311331333133313331333132313121111331333132323133122   >>