x:(`a`b!1 2;`b`c!3 4)
,/x
(`a`b!1 2
`b`c!3 4)
{x,y}/x
`a`b`c!1 3 4
they should be the same (except for identity element)
```
x:(`a`b!1 2;`b`c!3 4)
,/x
(`a`b!1 2
`b`c!3 4)
{x,y}/x
`a`b`c!1 3 4
```
they should be the same (except for identity element)