| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but [pers pn] is not [adj] [verb] | 64 |
|
| 2 | [conj] [pers pn] is not necessary [verb] | 44 |
|
| 3 | but [pers pn] is [adv] necessary [verb] | 17 |
|
| 4 | but [pron] is not necessary [verb] | 7 |
|
| 5 | but [pers pn] is [not/n't] necessary [verb] | 7 |
|
| 6 | but [pers pn] be not necessary [verb] | 7 |
|
| 7 | but [pers pn] [is] not necessary [verb] | 7 |
|
| 8 | but [pers pn] [be] not necessary [verb] | 7 |
|
| 9 | but [pers pn] is not necessary [verb] | 7 |
|
