You can assign into elements of an array if they are variables. All work is in one line -- within the print statement.

use List::MoreUtils qw(pairwise);

my ($first, $second, $third, $fourth, $fifth, $sixth);
my  @vars = \($first, $second, $third, $fourth, $fifth, $sixth);
my  @aarr = ('<chap', '<book', '<isb');

print {$,=' '; \*STDOUT}  pairwise { ${$a} = $b}  @vars,  @aarr;
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