| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] there [is] a | 1731 |
|
| 2 | [noun] [is] often a | 136 |
|
| 3 | there [is] often a | 115 |
|
| 4 | [noun] there [is] often | 28 |
|
