| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] sometimes [verb] | 728 |
|
| 2 | [is] sometimes [vb pp] | 717 |
|
| 3 | [is] [adv] referred | 213 |
|
| 4 | [is] [adv] referred | 207 |
|
| 5 | [be] sometimes referred | 64 |
|
| 6 | [is] sometimes referred | 41 |
|
| 7 | [is] sometimes refer | 41 |
|
