| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [is] [prep] [num] [noun pl] | 318 |
|
| 2 | course [prep] [num] [noun pl] | 66 |
|
| 3 | course [is] [prep] [num] | 55 |
|
| 4 | course [is] [prep] [noun pl] | 5 |
|
