| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] been [v-ing] [prep] [adj] year | 49 |
|
| 2 | [vb past] been [v-ing] [prep] [det] year | 20 |
|
| 3 | [verb] been [v-ing] [prep] several year | 14 |
|
| 4 | [vb past] been [v-ing] [prep] several [noun] | 11 |
|
| 5 | [vb past] been [verb] [prep] several year | 9 |
|
| 6 | [vb past] [be] [v-ing] [prep] several year | 6 |
|
| 7 | [vb past] be [v-ing] [prep] several year | 6 |
|
| 8 | [vb past] [been] [v-ing] [prep] several year | 6 |
|
| 9 | [vb past] been [v-ing] [prep] several year | 6 |
|
