| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] sometimes [adj] [verb] | 113 |
|
| 2 | it [is] [adv] useful [verb] | 87 |
|
| 3 | it [is] [adv] useful [verb] | 85 |
|
| 4 | it [be] sometimes useful [verb] | 15 |
|
| 5 | [pers pn] [is] sometimes useful [verb] | 14 |
|
| 6 | it [is] sometimes useful [verb] | 14 |
|
| 7 | it [is] sometimes useful [verb] | 14 |
|
| 8 | [pron] [is] sometimes useful [verb] | 14 |
|
