| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] for [det] [noun pl] | 20 |
|
| 2 | has been for [det] [noun pl] | 20 |
|
| 3 | has [been] for [det] years | 17 |
|
| 4 | has [been] for many [noun pl] | 11 |
|
| 5 | has [been] for some [noun pl] | 5 |
|
