| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who had been [v-ing] [prep] [adj] | 15 |
|
| 2 | who had [been] [v-ing] for [adj] | 8 |
|
| 3 | who had [been] [v-ing] [prep] [num] | 7 |
|
| 4 | who had [been] [v-ing] [prep] [det] | 5 |
|
