| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been used for [det] [noun pl] | 14 |
|
| 2 | have been used for many [noun] | 13 |
|
| 3 | have been used for [det] years | 12 |
|
| 4 | have been used for [det] year | 12 |
|
| 5 | has been used for [det] [noun] | 10 |
|
| 6 | have been used for [det] [noun sg] | 7 |
|
| 7 | have been used for [det] [noun] | 5 |
|
| 8 | have been used for this [noun] | 5 |
|
