| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been a | 10331 |
|
| 2 | [vb -s] been a | 3898 |
|
| 3 | [vb past] been a | 3172 |
|
| 4 | has been a | 3147 |
|
| 5 | had been a | 2988 |
|
| 6 | [vb infin] been a | 2090 |
|
| 7 | have been a | 2055 |
|
| 8 | 's been a | 751 |
|
| 9 | [vb base] been a | 671 |
|
| 10 | have been a | 493 |
|
| 11 | [to-vb] been a | 404 |
|
| 12 | to have been a | 403 |
|
| 13 | 'd been a | 183 |
|
| 14 | 've been a | 178 |
|
| 15 | having been a | 96 |
|
| 16 | [v-ing] been a | 96 |
|
| 17 | 've been a | 35 |
|
