| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | is [adv] because | 552 |
|
| 2 | is [adv] because | 444 |
|
| 3 | be partly because | 193 |
|
| 4 | [be] partly because | 193 |
|
| 5 | [is] partly because | 126 |
|
| 6 | is partly [conj] | 116 |
|
| 7 | is partly because | 110 |
|
