| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [v-ing] for a | 470 |
|
| 2 | [been] [v-ing] for a | 205 |
|
| 3 | [adv] [been] [v-ing] for | 121 |
|
| 4 | [adv] [been] [v-ing] a | 54 |
|
| 5 | [adv] [been] for a | 33 |
|
