| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [v-ing] [prep] years | 37 |
|
| 2 | [vb base] be [v-ing] for years | 36 |
|
| 3 | have be [v-ing] [prep] years | 26 |
|
| 4 | 've be [v-ing] [prep] years | 11 |
|
