$somehash{a1}{justtest}{value1}=1
$somehash{a1}{justtest}{value2}=2
$somehash{a1}{justtest}{value3}=3
$somehash{a2}{justtest}{value1}=1
$somehash{a2}{justtest}{value2}=2
$somehash{a2}{justtest}{value3}=3
.
.
.

##</code><code>##

a1:1
a1:2
a1:3
a2:1
a2:2
a2:3

##</code><code>##

foreach $key1 (sort keys %somehash)
{
  # here is where I don't know how to loop through all the 'value1,value2,value3'.Consider those would not necessarily be name the same way.
}