C11112331333132311331333133313331333132313233313331333132213231232211331   >>    C1111233133313231133133313331333133313231323331333133313221323123221133   <<    C11112331333132311331333133313331333132313233313331333132213231232211333   >>      C11112331333132311331333133313331333132313233313331333132213231232211332   >>