| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | while a [noun sg] be | 50 |
|
| 2 | while a [noun sg] [is] | 28 |
|
| 3 | while a [noun sg] is | 26 |
|
| 4 | while a [noun sg] [was/were] | 21 |
|
| 5 | while a [noun sg] was | 21 |
|
