| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [been] a | 1181 |
|
| 2 | it have [been] [adv] | 1171 |
|
| 3 | have [been] [adv] a | 373 |
|
| 4 | it have [adv] a | 21 |
|
