| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have [been] so long | 10 |
|
| 2 | it [verb] been so long | 10 |
|
| 3 | it [verb] [been] so long | 10 |
|
| 4 | it [vb -s] [been] so long | 9 |
|
| 5 | it 's [been] so long | 8 |
|
