| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [ex0] have been a [noun sg] | 1206 |
|
| 2 | have been [adv] a [noun sg] | 209 |
|
| 3 | [ex0] have been [adv] a | 70 |
|
| 4 | [ex0] have been [adv] [noun sg] | 5 |
|
