| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | there used [prep] [be] a | 138 |
|
| 2 | used [prep] [be] a [adj] | 116 |
|
| 3 | there [prep] [be] a [adj] | 21 |
|
| 4 | there used [prep] [be] [adj] | 6 |
|
