| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | been [verb] for [det] year | 117 |
|
| 2 | been [vb pp] for [det] year | 80 |
|
| 3 | been used for [det] [noun] | 27 |
|
| 4 | been used for [adj] year | 15 |
|
| 5 | been used [prep] [det] year | 14 |
|
| 6 | be used for [det] year | 14 |
|
| 7 | [be] used for [det] year | 14 |
|
| 8 | been used [prep] [det] year | 14 |
|
| 9 | [been] used for [det] year | 13 |
|
| 10 | been use for [det] year | 13 |
|
| 11 | been used for [det] year | 13 |
|
