| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb pp] a [noun sg] | 32940 |
|
| 2 | been a [noun sg] | 6073 |
|
| 3 | been [vb pp] a | 1298 |
|
| 4 | been [vb pp] [noun sg] | 994 |
|
