| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] [been] [v-ing] for | 584 |
|
| 2 | [been] [v-ing] for [num] | 198 |
|
| 3 | [vb past] [been] [v-ing] [num] | 31 |
|
| 4 | [vb past] [been] for [num] | 5 |
|
