| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has been [art] | 397 |
|
| 2 | it has [been] [art] | 397 |
|
| 3 | it has [been] a | 300 |
|
| 4 | it has [been] a | 251 |
|
| 5 | it has [been] the | 96 |
|
| 6 | it has [been] the | 96 |
|
| 7 | it has [been] an | 49 |
|
