940113 ak: e6f4 85
First two octets of ak are all
the 16 groups XORred together.

The last octet is the same
as in shortenedkode:
Zeroes are dots here.
See there are 5 all-zero
and 8 non-zero groups.
16 groups are all together.
The rest is easy. There are
exactly 16-8-5=3 mixed.
Those mixed you shall
see easily:
.... .... .... ....
.... b6c8 c4cf e627
6361 5655 be9a 1.88
e75e 31e. .3d1 3c9d