| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | attention must be [vb pp] to | 28 |
|
| 2 | attention must be paid to | 14 |
|
| 3 | attention must be pay to | 14 |
|
| 4 | attention must be give to | 10 |
|
| 5 | attention must be given to | 10 |
|
