| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | that it have been [adj] | 62 |
|
| 2 | [conj] it have been necessary | 17 |
|
| 3 | that it have be necessary | 5 |
|
| 4 | that it have [be] necessary | 5 |
|
| 5 | that it [verb] been necessary | 5 |
|
| 6 | that [pron] have been necessary | 5 |
|
| 7 | that it have [been] necessary | 5 |
|
