| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be about 20 | 37 |
|
| 2 | [be] about 20 | 37 |
|
| 3 | [was/were] about 20 | 18 |
|
| 4 | was about 20 | 11 |
|
| 5 | [is] about 20 | 9 |
|
| 6 | is about 20 | 9 |
|
| 7 | be about 20 | 7 |
|
| 8 | [be] about 20 | 7 |
|
| 9 | were about 20 | 7 |
|
