| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] be used for [adj] [noun] | 48 |
|
| 2 | [prep] be [verb] for [adj] purpose | 26 |
|
| 3 | [prep] be [vb pp] for [adj] purpose | 26 |
|
| 4 | [prep] be used for [adj] purpose | 11 |
|
| 5 | [prep] be use for [adj] purpose | 11 |
|
| 6 | [prep] be used [prep] [adj] purpose | 11 |
|
| 7 | [prep] be used [prep] [adj] purpose | 11 |
|
| 8 | [prep] be used for [adj] purpose | 11 |
|
| 9 | [prep] [be] used for [adj] purpose | 11 |
|
