(null)df5434(null)vg7856(null)fg3472(null)sd1234(null)jh45r5";

##</code><code>##

print for "df5434vg7856fg3472sd1234jh45r5" =~ m[(\w{2}.{4})]g;;
df5434
vg7856
fg3472
sd1234
jh45r5

##</code><code>##

print for unpack '(a6)*', "df5434vg7856fg3472sd1234jh45r5";;
df5434
vg7856
fg3472
sd1234
jh45r5