C11112331333132311331333133313331333132233131331211113313231121131111   >>    C1111233133313231133133313331333133313223313133121111331323112113111   <<    C11112331333132311331333133313331333132233131331211113313231121131113   >>      C11112331333132311331333133313331333132233131331211113313231121131112   >>