| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [verb] for [adj] years | 135 |
|
| 2 | has been [vb pp] for [adj] years | 78 |
|
| 3 | has been used for [adj] [noun] | 13 |
|
| 4 | have been used for [adj] years | 12 |
|
| 5 | [verb] been used for [adj] years | 12 |
|
| 6 | has been used for [adj] [noun pl] | 10 |
|
| 7 | has been used [prep] [adj] years | 8 |
|
| 8 | has been use for [adj] years | 7 |
|
| 9 | has been used for [adj] year | 7 |
|
| 10 | has [been] used for [adj] years | 7 |
|
| 11 | has [be] used for [adj] years | 7 |
|
| 12 | has be used for [adj] years | 7 |
|
| 13 | [vb -s] been used for [adj] years | 7 |
|
