| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have not been [verb] [prep] a | 75 |
|
| 2 | have not been [vb pp] [prep] a | 72 |
|
| 3 | has not been [verb] [prep] a | 34 |
|
| 4 | had not been [verb] [prep] a | 25 |
|
| 5 | have not been [verb] for a | 17 |
|
| 6 | have not been [verb] for a | 17 |
|
| 7 | have not been [verb] by a | 16 |
|
| 8 | have not been [verb] [prep] a | 16 |
|
| 9 | have not been [verb] by a | 16 |
|
| 10 | have not been [verb] as a | 14 |
|
| 11 | have not been [verb] as a | 14 |
|
| 12 | have not been [verb] in a | 9 |
|
| 13 | have not been [verb] in a | 9 |
|
| 14 | have not been [verb] to a | 6 |
|
| 15 | have not been [verb] to a | 6 |
|
| 16 | have not been used [prep] a | 5 |
|
| 17 | have not been use [prep] a | 5 |
|
