| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] often [verb] [prep] | 110 |
|
| 2 | it [is] often [vb pp] [prep] | 110 |
|
| 3 | it is often [verb] [prep] | 102 |
|
| 4 | it [is] often [verb] as | 23 |
|
| 5 | it [is] often [verb] by | 22 |
|
| 6 | it [is] often [verb] to | 20 |
|
| 7 | it [is] often [verb] in | 18 |
|
| 8 | it [is] often [verb] with | 13 |
|
| 9 | it [is] often used [prep] | 8 |
|
| 10 | it 's often [verb] [prep] | 8 |
|
| 11 | it [is] often use [prep] | 8 |
|
| 12 | it [is] often referred [prep] | 7 |
|
| 13 | it [is] often refer [prep] | 7 |
|
| 14 | it [is] often know [prep] | 6 |
|
| 15 | it [is] often known [prep] | 6 |
|
