| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [v-ing] on [prep] | 237 |
|
| 2 | been [v-ing] [adv] since | 76 |
|
| 3 | [been] [v-ing] on since | 18 |
|
| 4 | [be] [v-ing] on since | 18 |
|
| 5 | been [verb] on since | 18 |
|
| 6 | be [v-ing] on since | 18 |
|
