| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [be] [vb pp] [prep] [det] purpose | 5 |
|
| 2 | could [be] used [prep] [det] purpose | 5 |
|
| 3 | could [be] [vb pp] [prep] [det] purpose | 5 |
|
| 4 | could be [vb pp] [prep] [det] purpose | 5 |
|
| 5 | could be [vb pp] [prep] [det] purpose | 5 |
|
| 6 | could [be] [vb pp] for [det] purpose | 5 |
|
| 7 | could [be] [vb pp] [prep] [det] purpose | 5 |
|
| 8 | could [be] [vb pp] for [det] purpose | 5 |
|
