| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [adv] be extended to | 9 |
|
| 2 | should [adv] be extend to | 9 |
|
| 3 | should not be extend to | 8 |
|
| 4 | should [not/n't] be extend to | 8 |
|
| 5 | should not be extend to | 8 |
|
