Santa has caught up with the information age and does not trust
clear-text commands anymore.
He has decided that all communications
have to be encrypted to prevent an unfriendly take-over of his team.
Santa chooses a simple, secure, and toolless encryption scheme.
However, his team's memory capacity is limited and so he can only use
their names (Dasher, Dancer, Prancer, Vixen, Comet, Cupid, Donder and
Blitzen) as keys.

Dasher
Dancer
Prancer
Vixen
Comet
Cupid
Donder
Blitzen

Where is the team headed to?

ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789


STTYN YATLOEP DNEA ONBL TGNTO MHEHH EISTIARIB FHSRA LD IIONA NL HERUV LN17-PTAA-RTON-RDOE-MCTN-AHCO

                                                                      -4 +8 +0 +1
                                                                       6  I  A  B
                                                                       W  I  A  B
                                                                       5  H  9  A
                                                                      -0100 +1000 +0000 +0001