| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have been [v-ing] at | 60 |
|
| 2 | [noun sg] [vb -s] been [v-ing] at | 35 |
|
| 3 | [noun sg] has been [v-ing] at | 34 |
|
| 4 | [noun sg] had been [v-ing] at | 20 |
|
| 5 | [noun sg] [vb past] been [v-ing] at | 20 |
|
| 6 | [noun sg] [verb] been looking at | 14 |
|
| 7 | [noun sg] have been [v-ing] at | 5 |
|
| 8 | [noun sg] [vb base] been [v-ing] at | 5 |
|
