| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has be obtain from [art] | 9 |
|
| 2 | [vb -s] be obtain from [art] | 9 |
|
| 3 | [vb -s] been obtain from [art] | 9 |
|
| 4 | [vb -s] be obtained from [art] | 9 |
|
| 5 | [vb -s] be obtain from the | 7 |
|
