| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] should not [be] underestimated | 37 |
|
| 2 | [noun] should not be underestimated | 37 |
|
| 3 | [noun] should not be underestimated | 37 |
|
| 4 | [noun sg] should not [be] underestimated | 26 |
|
| 5 | [noun pl] should not [be] underestimated | 10 |
|
