+-----+---------+-----+----+----+----+----+----+----+
| AID |   Name  | TID | 01 | 02 | 03 | .. | 69 | 70 |
+-----+---------+-----+----+----+----+----+----+----+
| 001 | Amy     | 3   |    |    | b  |    | d  |    |
+-----+---------+-----+----+----+----+----+----+----+
| 002 | Bob     | 3   | a  | c  |    |    |    |    |
+-----+---------+-----+----+----+----+----+----+----+
| 003 | Charley | 1   |    |    |    |    |    |    |
+-----+---------+-----+----+----+----+----+----+----+

+-----+------+-----+----------+----------+
| AID | Name | TID | Question | Response |
+-----+------+-----+----------+----------+
| 001 | Amy  | 3   | 03       | b        |
+-----+------+-----+----------+----------+
| 001 | Amy  | 3   | 69       | d        |
+-----+------+-----+----------+----------+
| 002 | Bob  | 3   | 01       | a        |
+-----+------+-----+----------+----------+
| 002 | Bob  | 3   | 02       | c        |
+-----+------+-----+----------+----------+