所以这是表A.
+------------+--------+----------+
| LineNumber | Pallet | Location |
+------------+--------+----------+
| 1 | a | X |
+------------+--------+----------+
| 2 | a | X |
+------------+--------+----------+
| 3 | b | Y |
+------------+--------+----------+
| 4 | b | Y |
+------------+--------+----------+
| 5 | b | Y |
+------------+--------+----------+
| 6 | c | Z |
+------------+--------+----------+
| 7 | c | Z |
+------------+--------+----------+
| 8 | c | Z |
+------------+--------+----------+
| 9 | d | Q …