| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] course [pers pn] have | 467 |
|
| 2 | [prep] course [pers pn] should | 38 |
|
| 3 | [prep] [pers pn] should have | 29 |
|
| 4 | course [pers pn] should have | 10 |
|
