| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | course be [prep] three years [unc] | 24 |
|
| 2 | [noun sg] be [prep] three years [unc] | 24 |
|
| 3 | course be [prep] three years [unc] | 24 |
|
| 4 | [noun] be [prep] three years [unc] | 24 |
|
| 5 | be [vb pp] [prep] three years [unc] | 6 |
|
| 6 | be [verb] [prep] three years [unc] | 6 |
|
| 7 | be [prep] three years [unc] [noun sg] | 25 |
|
| 8 | be [prep] three years [unc] [noun] | 25 |
|
| 9 | be [prep] three years [unc] duration | 24 |
|
| 10 | be [prep] three years [unc] duration | 24 |
|
