| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [be] used for many year | 11 |
|
| 2 | [verb] [be] used for many year | 11 |
|
| 3 | has [be] used for many year | 7 |
|
| 4 | [vb -s] [be] used for many year | 7 |
|
| 5 | [be] used for many year [prep] | 8 |
|
| 6 | [be] used for many year [prep] | 8 |
|
| 7 | [be] used for many year in | 5 |
|
| 8 | [be] used for many year in | 5 |
|
