| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | point at which [adj] | 22 |
|
| 2 | rate at which [adj] | 21 |
|
| 3 | [noun sg] at which new | 11 |
|
| 4 | level at which [adj] | 10 |
|
| 5 | speed at which [adj] | 9 |
|
| 6 | age at which [adj] | 5 |
|
