C11111333133313232233133313331333131123313233313231333132313222332113121   >>    C1111133313331323223313331333133313112331323331323133313231322233211312   <<    C11111333133313232233133313331333131123313233313231333132313222332113123   >>      C11111333133313232233133313331333131123313233313231333132313222332113122   >>