| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] not [been] [verb] | 1388 |
|
| 2 | [vb -s] not [verb] a | 1050 |
|
| 3 | [vb -s] [been] [verb] a | 639 |
|
| 4 | [vb -s] not [been] a | 89 |
|
| 5 | not [been] [verb] a | 32 |
|
