C11111333133313232233133313331333131133132313331312111111111221121   >>    C1111133313331323223313331333133313113313231333131211111111122112   <<    C11111333133313232233133313331333131133132313331312111111111221123   >>      C11111333133313232233133313331333131133132313331312111111111221122   >>