| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] through | 359 |
|
| 2 | have been [vb pp] through | 269 |
|
| 3 | have been obtained [prep] | 161 |
|
| 4 | have been obtained [prep] | 161 |
|
| 5 | [verb] been obtained through | 5 |
|
| 6 | have been obtained through | 5 |
|
| 7 | have been obtain through | 5 |
|
| 8 | have be obtained through | 5 |
|
| 9 | have [been] obtained through | 5 |
|
| 10 | have [be] obtained through | 5 |
|
