| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which has been a [noun sg] | 18 |
|
| 2 | which has be a [noun sg] | 18 |
|
| 3 | which has [be] a [noun sg] | 18 |
|
| 4 | which has [been] a [noun sg] | 18 |
|
