| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been used for many [noun] [prep] | 8 |
|
| 2 | been used for many [noun pl] [prep] | 8 |
|
| 3 | been used for many year [prep] | 7 |
|
| 4 | been used for many years [prep] | 7 |
|
| 5 | been used for many [noun] in | 5 |
|
| 6 | been used for many [noun] in | 5 |
|
