print is a bit special, since it expects a file handle as an optional first argument, which can be a bareword.
You can eliminate that speciality by adding an explicit STDOUT:
$ perl -le 'print STDOUT one, two, three'
So you can have as many barewords in term position as you like.
If you leave out a comma, you have indirect method call syntax instead:
$ perl -le 'print STDOUT one, two three'
Can't locate object method "two" via package "three" (perhaps you forg
+ot to load "three"?) at -e line 1.
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