| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [be] [verb] at right angle [prep] | 5 |
|
| 2 | [be] [verb] at right angles [prep] | 5 |
|
| 3 | be [verb] at right [noun] [prep] | 5 |
|
| 4 | [be] [verb] at right [noun pl] [prep] | 5 |
|
