| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [prep] [adj] purpose | 168 |
|
| 2 | [verb] [prep] that purpose | 53 |
|
| 3 | used [prep] that [noun] | 47 |
|
| 4 | [vb pp] [prep] that purpose | 40 |
|
| 5 | use [prep] that purpose | 12 |
|
| 6 | used [prep] that purpose | 12 |
|
