| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] been [v-ing] [prep] a | 50 |
|
| 2 | n't been [verb] [prep] a | 25 |
|
| 3 | n't be [v-ing] [prep] a | 16 |
|
| 4 | n't [be] [v-ing] [prep] a | 16 |
|
| 5 | n't been [v-ing] [prep] [art] | 13 |
|
| 6 | not been [v-ing] [prep] a | 11 |
|
| 7 | [not/n't] been [v-ing] [prep] a | 11 |
|
| 8 | n't [been] [v-ing] [prep] a | 6 |
|
