c1 := 'abcde' ----> 'abcde' c2 := 'aeuoi' ----> 'aeiou' c1 ++ c2 ----> 'abcdeiou' c1 -- c2 ----> 'bcd' c1 ** c2 ----> 'ae' Run-time error 104 at line 14 in std81.icn cset expected offending value: []