| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] for years | 107 |
|
| 2 | have [been] used for [noun] | 62 |
|
| 3 | have [been] [vb pp] for years | 28 |
|
| 4 | have [been] used for [noun pl] | 21 |
|
| 5 | have [been] used [prep] years | 8 |
|
| 6 | have [been] use for years | 7 |
|
| 7 | have [be] used for years | 6 |
|
| 8 | [verb] [been] used for years | 6 |
|
| 9 | have [been] used for year | 6 |
|
