| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been used for many [noun] | 8 |
|
| 2 | has been used for [det] [noun pl] | 8 |
|
| 3 | has been used for [det] years | 7 |
|
| 4 | has been used for [det] year | 7 |
|
