| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a 20 | 75 |
|
| 2 | [prep] a 20 | 75 |
|
| 3 | [prep] a 20 | 75 |
|
| 4 | of a 20 | 12 |
|
| 5 | with a 20 | 12 |
|
| 6 | of a 20 | 12 |
|
| 7 | with a 20 | 12 |
|
| 8 | in a 20 | 9 |
|
| 9 | on a 20 | 9 |
|
| 10 | in a 20 | 9 |
|
| 11 | on a 20 | 9 |
|
| 12 | to a 20 | 7 |
|
| 13 | to a 20 | 7 |
|
| 14 | for a 20 | 6 |
|
| 15 | for a 20 | 6 |
|
| 16 | by a 20 | 5 |
|
| 17 | by a 20 | 5 |
|
