use strict;
use warnings;

my @b;
my @c={ 22,44,55};  
my @d={ "yy","tt"}; 
$b[0]=@c;           # are you trying to create 2-D array?
$b[1]=@d;
my @e= $b[1];       # i think you want b as 2-D array
print "<$e[0]>\n";