| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be used for [det] purpose | 67 |
|
| 2 | [be] used for [det] purpose | 67 |
|
| 3 | been used for [det] [noun] | 27 |
|
| 4 | been [verb] for [det] purpose | 14 |
|
| 5 | been [vb pp] for [det] purpose | 14 |
|
| 6 | been used for [adj] purpose | 9 |
|
| 7 | been used [prep] [det] purpose | 6 |
|
| 8 | [been] used for [det] purpose | 6 |
|
| 9 | been used [prep] [det] purpose | 6 |
|
| 10 | been used for [det] purpose | 6 |
|
| 11 | been use for [det] purpose | 6 |
|
