| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been a long time since | 7 |
|
| 2 | [vb -s] [been] a long time since | 7 |
|
| 3 | [vb -s] [been] a long time since | 7 |
|
| 4 | 's [been] a long time since | 5 |
|
