C111123313331323113313331333133313331323133121111331323113122321   >>    C11112331333132311331333133313331333132313312111133132311312232   <<    C111123313331323113313331333133313331323133121111331323113122323   >>      C111123313331323113313331333133313331323133121111331323113122322   >>