| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] an [noun] for | 229 |
|
| 2 | [been] [v-ing] [noun] for | 209 |
|
| 3 | [been] [v-ing] an [noun] | 78 |
|
| 4 | [been] an [noun] for | 37 |
|
