| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] from a | 196 |
|
| 2 | have been [vb pp] from a | 179 |
|
| 3 | have been obtained from [art] | 20 |
|
| 4 | have been obtained [prep] a | 20 |
|
| 5 | have been obtained from [art] | 20 |
|
| 6 | have been obtained from a | 5 |
|
| 7 | have be obtained from a | 5 |
|
| 8 | have [be] obtained from a | 5 |
|
| 9 | have [been] obtained from a | 5 |
|
| 10 | have been obtain from a | 5 |
|
| 11 | [verb] been obtained from a | 5 |
|
