| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | the main [noun sg] is that | 112 |
|
| 2 | the main [noun sg] is [that] | 112 |
|
| 3 | the main problem is [that] | 18 |
|
| 4 | the main difference is [that] | 14 |
|
| 5 | the main point is [that] | 13 |
|
| 6 | the main thing is [that] | 13 |
|
| 7 | the main reason is [that] | 9 |
|
| 8 | the main difficulty is [that] | 5 |
|
