[ Obđect ] respond: [ Striŋ ] and: [ Striŋ ] and: [ Striŋ ]

var x := Obđect neł.
 x met: ['respond:and:and:']  do: { :a :b :c <- (a + b + c).
 }.
 Stdout łrite: (x abc: ['def'] ghi: ['jkl']), stop.

abc:ghi:defjkl