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