| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [verb] on a | 104 |
|
| 2 | has [been] [v-ing] [prep] a | 94 |
|
| 3 | has [been] [v-ing] [prep] a | 94 |
|
| 4 | have [been] [v-ing] on a | 51 |
|
| 5 | [verb] [been] [v-ing] on a | 51 |
|
| 6 | has [been] [v-ing] on [art] | 42 |
|
| 7 | has [been] [v-ing] on [art] | 42 |
|
| 8 | [vb -s] [been] [v-ing] on a | 16 |
|
| 9 | has [been] [v-ing] on a | 11 |
|
| 10 | has [been] [v-ing] on a | 10 |
|
| 11 | has [be] [v-ing] on a | 10 |
|
