| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] a [noun sg] [prep] | 240 |
|
| 2 | have been a [noun sg] [prep] | 221 |
|
| 3 | have been [v-ing] [noun sg] [prep] | 77 |
|
| 4 | have been [v-ing] a [noun sg] | 60 |
|
