| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | course [is] [prep] four [noun pl] ' | 15 |
|
| 2 | course [is] [prep] four [noun pl] ' | 15 |
|
| 3 | [noun sg] [is] [prep] four [noun pl] ' | 15 |
|
| 4 | [noun] [is] [prep] four [noun pl] ' | 15 |
|
| 5 | [is] [prep] four [noun pl] ' [noun] | 15 |
|
| 6 | [is] [prep] four [noun pl] ' duration | 15 |
|
| 7 | [is] [prep] four [noun pl] ' [noun sg] | 15 |
|
| 8 | [is] [prep] four [noun pl] ' duration | 15 |
|
