| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] be remembered that [det] | 37 |
|
| 2 | it [modal v] be remembered that [det] | 37 |
|
| 3 | it must be remembered that [det] | 23 |
|
| 4 | it must be remembered that [det] | 23 |
|
| 5 | it should be remembered that [det] | 14 |
|
| 6 | it should be remembered that [det] | 14 |
|
| 7 | it [modal v] be remembered that these | 10 |
|
| 8 | it [modal v] be remembered that this | 9 |
|
