| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] an [noun sg] | 74 |
|
| 2 | 've [been] [v-ing] [noun sg] | 70 |
|
| 3 | 've [been] [v-ing] an | 10 |
|
| 4 | 've [been] an [noun sg] | 5 |
|
