| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 1978 and [vb -s] been | 5 |
|
| 2 | 1978 and [vb -s] be | 5 |
|
| 3 | 1978 and has be | 5 |
|
| 4 | 1978 and [vb -s] be | 5 |
|
