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  DB<1> ($blue, $red) = qw / b r/;

  DB<2> say  ${$_} for qw /blue red/;
b
r

$ perl -Mstrict -E 'our ($blue, $red) = qw / b r/; say  ${$_} for qw /
+blue red/;'
Can't use string ("blue") as a SCALAR ref while "strict refs" in use a
+t -e line 1.

  DB<3> say ${ "bl" . "ue"};
b