| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] not be present [prep] | 14 |
|
| 2 | [modal v] not be present [prep] | 14 |
|
| 3 | may not be present [prep] | 5 |
|
| 4 | may not be present [prep] | 5 |
|
| 5 | not be present [prep] the | 10 |
|
| 6 | not be present [prep] [art] | 10 |
|
| 7 | not be present [prep] the | 10 |
|
| 8 | not be present [prep] [art] | 10 |
|
