| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] is [prep] [det] | 1137 |
|
| 2 | [noun] is [prep] course | 278 |
|
| 3 | is [prep] course [det] | 21 |
|
| 4 | [noun] [prep] course [det] | 15 |
|
