| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [unc] [n mass] have been [prep] | 5 |
|
| 2 | [unc] [n mass] have be [prep] | 5 |
|
| 3 | [unc] [n mass] have [be] [prep] | 5 |
|
| 4 | [unc] [n mass] have [been] [prep] | 5 |
|
