| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [been] [v-ing] [prep] [det] | 545 |
|
| 2 | [v-ing] [prep] [det] year | 105 |
|
| 3 | [been] [v-ing] [prep] year | 85 |
|
| 4 | [been] [prep] [det] year | 41 |
|
| 5 | [been] [v-ing] [det] year | 8 |
|
