| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [been] [v-ing] for a | 62 |
|
| 2 | [been] [v-ing] for a long | 25 |
|
| 3 | [vb base] [been] for a long | 8 |
|
| 4 | [vb base] [been] [v-ing] a long | 7 |
|
