| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | should [be] [vb pp] for [det] purpose | 9 |
|
| 2 | should be [vb pp] for [det] purpose | 9 |
|
| 3 | should [be] [vb pp] for [det] purpose | 9 |
|
| 4 | should be [vb pp] for [det] purpose | 9 |
|
| 5 | should [be] [vb pp] for [det] purpose | 8 |
|
| 6 | should [be] [vb pp] for this purpose | 7 |
|
