| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] this is [subord] | 28 |
|
| 2 | [adv] this is because | 25 |
|
| 3 | [adv] this is because | 25 |
|
| 4 | perhaps this is [conj] | 7 |
|
| 5 | often this is [conj] | 5 |
|
