| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have been obtained [prep] a | 11 |
|
| 2 | [noun sg] have been obtained [prep] a | 8 |
|
| 3 | have been obtained [prep] a [adj] | 10 |
|
| 4 | have been obtained [prep] a [noun] | 9 |
|
| 5 | have been obtained [prep] a [adj] | 9 |
|
| 6 | have been obtained [prep] a [noun sg] | 9 |
|
