- [ "stream ( ? @ ? )" "stream_eq ( ? ≗ ? )" "stream_hdtl ( ⫰? )" "stream_tls ( ⫰*[?]? )" * ]
- [ "list ( ◊ ) ( ? @ ? ) ( |?| )" "list2 ( ◊ ) ( {?,?} @ ? ) ( ? @@ ? ) ( |?| )" * ]
+ [ "stream ( ? ⨮{?} ? )" "stream_eq ( ? ≗{?} ? )" "stream_hdtl ( ⫰{?}? )" "stream_tls ( ⫰*{?}[?]? )" * ]
+ [ "list ( ◊ ) ( ? ⨮{?} ? ) ( |?| )" "list2 ( ◊ ) ( {?,?} ⨮{?,?} ? ) ( |?| )" * ]