#!/usr/bin/perl
use strict;
use warnings;
my $data= "
VLAN0001
Spanning tree enabled protocol rstp
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
PE8/1 Desg FWD 2 128.2945 P2p Edge
Ta579 Desg FWD 3 128.5761 P2p Edge
VLAN0023
Spanning tree enabled protocol rstp
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
PE8/1 Desg FWD 2 128.2945 P2p Edge
Ta579 Desg FWD 3 128.5761 P2p Edge
ACCOUNT
Spanning tree enabled protocol rstp
Interface Role Sts Cost Prio.Nbr Type
------------------- ---- --- --------- -------- --------------------------------
Ta579 Desg FWD 1 128.5764 P2p
";
my @list = ($data =~ /(^[A-Za-z0-9]+$).*?(?=^[A-Za-z0-9]+$|\Z)/msg);
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