| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [to-vb] [prep] | 9224 |
|
| 2 | [be] [vb pp] [to-vb] [prep] | 9224 |
|
| 3 | are [verb] [to-vb] [prep] | 1781 |
|
| 4 | are [vb pp] [verb] [prep] | 1459 |
|
| 5 | [am/are] [vb pp] [to-vb] [prep] | 1336 |
|
