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[:~.]]<@([:<""./.)"1~1+~+/\@#:@+[:i\)"#.2^#-12#:@i.@^#
Try it online!Try it online!
-7 bytes thank to xash!
Explanation later.
[:~.]([:<"./.)"1~1+/\@#:@+[:i.2^#-1:
Try it online!
[:~.]<@("./.~+/\)"#.2#:@i.@^#
