C11112331333132311331333133313331333132313231123313232233223311   >>    C1111233133313231133133313331333133313231323112331323223322331   <<    C11112331333132311331333133313331333132313231123313232233223313   >>      C11112331333132311331333133313331333132313231123313232233223312   >>