| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | 30 minutes [prep] [noun sg] | 33 |
|
| 2 | 30 minutes [prep] [noun sg] | 33 |
|
| 3 | 30 minutes at [noun sg] | 8 |
|
| 4 | 30 minutes at [noun sg] | 8 |
|
| 5 | 30 minutes of [noun sg] | 6 |
|
| 6 | 30 minutes of [noun sg] | 6 |
|
| 7 | 30 minutes [adj] [noun sg] | 5 |
|
| 8 | 30 minutes [art] [noun sg] | 5 |
|
| 9 | 30 minutes [art] [noun sg] | 5 |
|
