| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun pl] [vb base] been used for | 32 |
|
| 2 | [noun pl] [vb base] [been] used for | 32 |
|
| 3 | [noun pl] [vb base] [be] used for | 32 |
|
| 4 | [noun pl] have [be] used for | 32 |
|
| 5 | [noun pl] [vb base] be used for | 32 |
|
