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sub{map{[grep$_,map{shift@$_shift@{$_[-$_]}reverse@_[0}-$_..$_]]0]}0..$#_,($#_)x$#{$_[0]}}
Try it online!Try it online!
sub{map{[grep$_,map{shift@$_}reverse@_[0..$_]]}0..$#_,($#_)x$#{$_[0]}}
Try it online!
sub{map{[grep$_,map{shift@{$_[-$_]}}-$_..0]}0..$#_,($#_)x$#{$_[0]}}
