| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [prep] this [noun] | 660 |
|
| 2 | [be] [prep] this background | 37 |
|
| 3 | be [prep] this background | 37 |
|
| 4 | is [prep] [adj] background | 27 |
|
| 5 | is [prep] [det] background | 27 |
|
| 6 | [is] [prep] this background | 24 |
|
| 7 | is [prep] this background | 23 |
|
