| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | are to be [verb] [prep] | 1221 |
|
| 2 | are to be [vb pp] [prep] | 1220 |
|
| 3 | [be] to be used [prep] | 150 |
|
| 4 | be to be used [prep] | 150 |
|
| 5 | are to be use [prep] | 28 |
|
| 6 | are to [be] used [prep] | 28 |
|
| 7 | [am/are] to be used [prep] | 28 |
|
| 8 | are to [be] used [prep] | 28 |
|
| 9 | are [prep] be used [prep] | 28 |
|
| 10 | are to be used [prep] | 28 |
|
