| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | can have been [adj] | 17 |
|
| 2 | can have been [det] | 8 |
|
| 3 | [modal v] have been few | 8 |
|
| 4 | can [verb] been few | 5 |
|
| 5 | can have [be] few | 5 |
|
| 6 | can have be few | 5 |
|
| 7 | can have [been] few | 5 |
|
| 8 | can have been few | 5 |
|
