| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has been [prep] [det] | 119 |
|
| 2 | has [prep] [det] years | 47 |
|
| 3 | been [prep] [det] years | 38 |
|
| 4 | has been [prep] years | 7 |
|
