| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | reason for [v-ing] [pron] | 154 |
|
| 2 | [det] reason for [v-ing] | 70 |
|
| 3 | [det] reason for [pron] | 30 |
|
| 4 | [det] for [v-ing] [pron] | 24 |
|
