| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | used [prep] be a [adj] | 117 |
|
| 2 | it [prep] be a [adj] | 47 |
|
| 3 | it used [prep] be a | 45 |
|
| 4 | it used [prep] be [adj] | 29 |
|
