| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] for [art] long | 10 |
|
| 2 | [vb base] been [v-ing] for a long | 10 |
|
| 3 | [vb base] been [v-ing] for a long | 10 |
|
| 4 | 've been [v-ing] for [art] long | 6 |
|
