| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is to be [verb] | 4677 |
|
| 2 | is to be [vb pp] | 4661 |
|
| 3 | [be] to be used | 296 |
|
| 4 | be to be used | 296 |
|
| 5 | [is] to be used | 143 |
|
| 6 | is to be use | 142 |
|
| 7 | is to [be] used | 141 |
|
| 8 | is to be used | 141 |
|
| 9 | is to [be] used | 141 |
|
| 10 | is [prep] be used | 141 |
|
| 11 | is to be used | 141 |
|
| 12 | is [prep] be used | 141 |
|
