| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be an [noun sg] | 16102 |
|
| 2 | [subord] an [noun sg] | 3640 |
|
| 3 | be [subord] [noun sg] | 287 |
|
| 4 | be [subord] an | 23 |
|
