| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adj] problem is [that] | 239 |
|
| 2 | main [noun] is [that] | 179 |
|
| 3 | [adj] problem is [that] | 160 |
|
| 4 | main problem [be] [that] | 33 |
|
| 5 | main problem be [that] | 33 |
|
| 6 | main problem is [conj] | 23 |
|
| 7 | main problem [is] [that] | 23 |
|
| 8 | main problem is [that] | 23 |
|
