| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] be under | 20 |
|
| 2 | [vb infin] been under | 17 |
|
| 3 | [vb infin] [been] under | 17 |
|
| 4 | have [be] under | 16 |
|
