| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] it [modal v] [be] [adj] | 776 |
|
| 2 | [noun sg] it [modal v] [be] [adj] | 514 |
|
| 3 | course [pron] [modal v] [be] [adj] | 56 |
|
| 4 | course it [modal v] [be] [adj] | 20 |
|
| 5 | course it [modal v] [be] [adj] | 18 |
|
