| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and once a [noun sg] have | 6 |
|
| 2 | and once a [noun sg] [verb] | 6 |
|
| 3 | and once a [noun sg] [vb -s] | 6 |
|
| 4 | and once a [noun sg] has | 6 |
|
