C111123313331323113313331333133313331323131211113313331323331323132233231   >>    C11112331333132311331333133313331333132313121111331333132333132313223323   <<    C111123313331323113313331333133313331323131211113313331323331323132233233   >>      C111123313331323113313331333133313331323131211113313331323331323132233232   >>