| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [vb pp] at a time [conj] | 10 |
|
| 2 | be [vb pp] at a time [conj] | 10 |
|
| 3 | [vb pp] one at a time [conj] | 5 |
|
| 4 | [vb pp] [pron] at a time [conj] | 5 |
|
| 5 | [vb pp] one at a time [conj] | 5 |
|
| 6 | [vb pp] [indef pn] at a time [conj] | 5 |
|
