| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] used for [adj] purpose | 129 |
|
| 2 | [be] used for [det] purpose | 67 |
|
| 3 | [be] [verb] for that purpose | 18 |
|
| 4 | [be] [vb pp] for that purpose | 16 |
|
| 5 | [be] used for that [noun] | 12 |
|
| 6 | [be] used [prep] that purpose | 10 |
|
| 7 | [be] used for that purpose | 10 |
|
| 8 | [be] use for that purpose | 10 |
|
| 9 | [be] used for that purpose | 10 |
|
| 10 | [be] used [prep] that purpose | 10 |
|
