| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [v-ing] [adv] for | 87 |
|
| 2 | [been] [v-ing] [adv] for some | 31 |
|
| 3 | has [been] [v-ing] for some | 16 |
|
| 4 | has [been] [adv] for some | 11 |
|
