| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] a last | 17 |
|
| 2 | be [verb] as a last | 17 |
|
| 3 | be use [prep] a last | 13 |
|
| 4 | be used [prep] a last | 13 |
|
