| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb -s] been [v-ing] for [adj] | 14 |
|
| 2 | it [vb -s] been [v-ing] for [num] | 11 |
|
| 3 | it 's been [v-ing] for [adj] | 7 |
|
| 4 | it has been [v-ing] for [adj] | 7 |
|
