| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [verb] [prep] a | 1853 |
|
| 2 | [det] has [been] [verb] [prep] | 591 |
|
| 3 | [det] has [verb] [prep] a | 67 |
|
| 4 | [det] [been] [verb] [prep] a | 6 |
|
