| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] a [noun sg] | 407839 |
|
| 2 | [be] a [noun sg] | 113406 |
|
| 3 | [prep] [be] a | 13753 |
|
| 4 | [prep] [be] [noun sg] | 2745 |
|
