say "$x";       Hello
say "$ x";      Hello
say "@y";       Hi
say "@ y";      @ y
say  @ y;       Hi
say $#y;        0
say $# y;       syntax error at (eval 6) line 2, at EOF   (Might be a runaway multi-line ;; string starting on line 1)
say $ #y;       syntax error at (eval 7) line 1, at EOF
say @ $z;       Bonjour
say @$ z;       syntax error at (eval 9) line 1, near "@$ z"