C11112331333132311331333133313331333132312323133313232223131111   >>    C1111233133313231133133313331333133313231232313331323222313111   <<    C11112331333132311331333133313331333132312323133313232223131113   >>      C11112331333132311331333133313331333132312323133313232223131112   >>