| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [v-ing] for | 380 |
|
| 2 | [vb -s] been [v-ing] a | 242 |
|
| 3 | been [v-ing] for a | 242 |
|
| 4 | [vb -s] [v-ing] for a | 16 |
|
| 5 | [vb -s] been for a | 15 |
|
