| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] been [v-ing] on a | 54 |
|
| 2 | have [been] [v-ing] on a | 54 |
|
| 3 | [verb] [been] [v-ing] on a | 54 |
|
| 4 | [verb] [been] [v-ing] on a | 51 |
|
| 5 | [verb] [been] working on a | 26 |
|
| 6 | [vb past] [been] [v-ing] on a | 18 |
|
| 7 | [vb -s] [been] [v-ing] on a | 17 |
|
| 8 | had [been] [v-ing] on a | 16 |
|
| 9 | [vb base] [been] [v-ing] on a | 15 |
|
| 10 | has [been] [v-ing] on a | 11 |
|
| 11 | have [been] [v-ing] on a | 10 |
|
| 12 | 's [been] [v-ing] on a | 6 |
|
| 13 | 've [been] [v-ing] on a | 5 |
|
