| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] be [prep] once a [noun] | 7 |
|
| 2 | [noun] be [prep] once a [noun] | 7 |
|
| 3 | [noun sg] be [prep] once a [noun] | 6 |
|
| 4 | be [prep] once a [adj] [noun] | 6 |
|
| 5 | be [prep] once a [adj] [noun] | 6 |
|
| 6 | be [prep] once a [noun] [prep] | 7 |
|
| 7 | be [prep] once a [noun] [prep] | 7 |
|
| 8 | be [prep] once a [noun] and | 6 |
|
| 9 | be [prep] once a [noun] of | 6 |
|
| 10 | be [prep] once a [noun] and | 6 |
|
| 11 | be [prep] once a [noun] of | 6 |
|
| 12 | be [prep] once a [noun] [conj] | 6 |
|
| 13 | be [prep] once a [noun] [coord] | 6 |
|
