C111123313331323113313331333133313331323112133313331333221213311   >>    C11112331333132311331333133313331333132311213331333133322121331   <<    C111123313331323113313331333133313331323112133313331333221213313   >>      C111123313331323113313331333133313331323112133313331333221213312   >>