Is some able to explain the differing results of the following three expressions:
3{⍺}/1 2 3 4
1 2
3{⍵}/1 2 3 4
3 4
3{⍺,⍵}/1 2 3 4
┌─────┬─────┐
│ 1 2 3 │ 2 3 4 │
└─────┴─────┘
3{⍺}/1 2 3 4
1 2
3{⍵}/1 2 3 4
3 4
3{⍺,⍵}/1 2 3 4
┌─────┬─────┐
│ 1 2 3 │ 2 3 4 │
└─────┴─────┘