C111123313331323113313331333133313331323133121111331323211331323113121   >>    C11112331333132311331333133313331333132313312111133132321133132311312   <<    C111123313331323113313331333133313331323133121111331323211331323113123   >>      C111123313331323113313331333133313331323133121111331323211331323113122   >>