| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | has [been] [vb pp] a | 372 |
|
| 2 | has [vb pp] a [n mass] | 243 |
|
| 3 | has [been] [vb pp] [n mass] | 51 |
|
| 4 | has [been] a [n mass] | 23 |
|
| 5 | [been] [vb pp] a [n mass] | 21 |
|
