| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | service [modal v] be [verb] as a | 5 |
|
| 2 | service [modal v] [be] [verb] as a | 5 |
|
| 3 | service [modal v] [be] [verb] as a | 5 |
|
| 4 | service [modal v] be [verb] as a | 5 |
|
