| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that has been [verb] | 849 |
|
| 2 | that has been [vb pp] | 772 |
|
| 3 | that [verb] been developed | 43 |
|
| 4 | that have been developed | 43 |
|
| 5 | [conj] has been developed | 24 |
|
| 6 | that [vb -s] been developed | 18 |
|
| 7 | that has been develop | 18 |
|
| 8 | that has be developed | 17 |
|
| 9 | that has [be] developed | 17 |
|
| 10 | that has [been] developed | 17 |
|
