| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] a long time since | 20 |
|
| 2 | have [been] a long time since | 20 |
|
| 3 | have been a long time since | 20 |
|
| 4 | had [been] a long time since | 13 |
|
| 5 | 's [been] a long time since | 5 |
|
