| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] often as [verb] | 10 |
|
| 2 | [adv] often as [verb] | 10 |
|
| 3 | [adv] often as [vb pp] | 9 |
|
| 4 | as often as [verb] | 8 |
|
| 5 | as often as [verb] | 8 |
|
| 6 | [adv] often as require | 6 |
|
| 7 | [adv] often as required | 6 |
|
