| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been [verb] | 3607 |
|
| 2 | it has been [v-ing] | 132 |
|
| 3 | [pron] has been working | 56 |
|
| 4 | it [verb] been working | 17 |
|
| 5 | it have been working | 17 |
|
| 6 | it [vb -s] been working | 13 |
|
| 7 | it has been work | 12 |
|
| 8 | it has [been] working | 11 |
|
| 9 | it has be working | 11 |
|
| 10 | it has [be] working | 11 |
|
