| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [v-ing] [prep] | 1650 |
|
| 2 | [is] always [v-ing] [prep] | 104 |
|
| 3 | it [is] always [prep] | 77 |
|
| 4 | it [is] always [v-ing] | 31 |
|
