| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [adv] refer [prep] [prep] | 28 |
|
| 2 | it [is] [adv] refer [prep] [prep] | 28 |
|
| 3 | [pron] [is] often refer [prep] [prep] | 14 |
|
| 4 | it [is] often [verb] [prep] [prep] | 8 |
|
| 5 | it [be] often refer [prep] [prep] | 8 |
|
| 6 | it [is] often refer [prep] [prep] | 5 |
|
| 7 | it [is] often refer [prep] [prep] | 5 |
|
