C11111333133313232233133313331333133313231312111133131133132233313121   >>    C1111133313331323223313331333133313331323131211113313113313223331312   <<    C11111333133313232233133313331333133313231312111133131133132233313123   >>      C11111333133313232233133313331333133313231312111133131133132233313122   >>