| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they [vb base] been [v-ing] for [noun] | 8 |
|
| 2 | they 've been [v-ing] for [noun] | 6 |
|
| 3 | they [vb base] been [v-ing] for year | 5 |
|
| 4 | they [vb base] been [v-ing] for years | 5 |
|
| 5 | they [vb base] been [v-ing] for [noun pl] | 5 |
|
