| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [det] [subord] an [noun sg] in | 20 |
|
| 2 | [det] than an [noun sg] in | 17 |
|
| 3 | more [subord] an [noun sg] in | 15 |
|
| 4 | [det] [subord] an exercise in | 5 |
|
