| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [art] | 768 |
|
| 2 | have been [v-ing] [art] | 423 |
|
| 3 | have been investigating [art] | 18 |
|
| 4 | [verb] been investigating [art] | 18 |
|
| 5 | [vb base] been investigating [art] | 8 |
|
| 6 | have been investigate [art] | 7 |
|
| 7 | have [be] investigating [art] | 7 |
|
| 8 | have be investigating [art] | 7 |
|
| 9 | have [been] investigating [art] | 7 |
|
| 10 | have been investigating [art] | 7 |
|
