| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | need not have [been] [adj] | 7 |
|
| 2 | need not have been [adj] | 7 |
|
| 3 | need not have be [adj] | 7 |
|
| 4 | need not have [be] [adj] | 6 |
|
