C111123313331323113313331333133313331323112133313331333132331211311   >>    C11112331333132311331333133313331333132311213331333133313233121131   <<    C111123313331323113313331333133313331323112133313331333132331211313   >>      C111123313331323113313331333133313331323112133313331333132331211312   >>