| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] [been] [v-ing] on [prep] | 111 |
|
| 2 | [det] [vb -s] [been] [v-ing] on | 15 |
|
| 3 | [det] [vb -s] [been] [v-ing] [prep] | 13 |
|
