| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] 20 year ['s] [noun sg] [prep] | 12 |
|
| 2 | [prep] 20 years ['s] [noun] [prep] | 12 |
|
| 3 | [prep] 20 year ' [noun] [prep] | 12 |
|
| 4 | [prep] 20 year ['s] imprisonment [prep] | 7 |
|
| 5 | [prep] 20 year ['s] imprisonment [prep] | 7 |
|
| 6 | to 20 year ['s] [noun] [prep] | 6 |
|
| 7 | [prep] 20 year ['s] [noun] for | 5 |
|
