| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [v-ing] [adv] for a | 584 |
|
| 2 | been [v-ing] [adv] for | 390 |
|
| 3 | been [v-ing] for a | 242 |
|
| 4 | been [adv] for a | 136 |
|
| 5 | been [v-ing] [adv] a | 92 |
|
