| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [be] hard [noun] | 116 |
|
| 2 | it [be] [noun] but | 30 |
|
| 3 | [be] hard [noun] but | 19 |
|
| 4 | it [be] hard but | 5 |
|
