| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which have been [verb] a | 44 |
|
| 2 | which have [been] [verb] a | 44 |
|
| 3 | which have [be] [verb] a | 44 |
|
| 4 | which have be [verb] a | 44 |
|
| 5 | which have [be] [vb pp] a | 30 |
|
| 6 | which has [be] [verb] a | 29 |
|
| 7 | which had [be] [verb] a | 14 |
|
| 8 | which have [be] [v-ing] a | 12 |
|
