| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | course [is] [prep] [num] years [unc] | 45 |
|
| 2 | [noun sg] [is] [prep] [num] years [unc] | 45 |
|
| 3 | [noun] [is] [prep] [num] years [unc] | 45 |
|
| 4 | course [is] [prep] [num] years [unc] | 45 |
|
| 5 | [is] [prep] [num] years [unc] [noun] | 46 |
|
| 6 | [is] [prep] [num] years [unc] [noun sg] | 46 |
|
| 7 | [is] [prep] [num] years [unc] duration | 45 |
|
| 8 | [is] [prep] [num] years [unc] duration | 45 |
|
