| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it should [verb] a | 83 |
|
| 2 | it should [vb infin] a | 83 |
|
| 3 | it should have a | 27 |
|
| 4 | it should have a | 27 |
|
| 5 | it should provide a | 7 |
|
| 6 | it should provide a | 7 |
|
| 7 | it should make a | 5 |
|
| 8 | it should make a | 5 |
|
