| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it has be [v-ing] [prep] [adj] | 13 |
|
| 2 | it has been [v-ing] [prep] [adj] | 13 |
|
| 3 | it has be [v-ing] [prep] [num] | 8 |
|
| 4 | it has be [v-ing] for [adj] | 7 |
|
