T52ca, 4th problem

CG&CS - Station X              

                      19 September, 1943.

To Sturgeon Team

We have intercepted this message. Please, try to decipher it.

John Tiltman,

We thought the message have the same inner setting that the
last message:  "3,V,1,I,II,IV,5,III,7,9".

Thanks to operators chat, we know the  MKU="XWZYU"

9GMERTTIXOSSA3AH/VKVPUPASZKTKFVEWW4OTQBXXQHC+G3W3K
MLUVHAANBJ9N3OBHHTCVAV+IE3PY4ALRM3PYB4OVVWD/RI/HOW
DBLFJIHZMZXSMLA4SC4GBY8PCW9VBMNBBI+FAJUC+/RDPLVEIT
/ZZXVEBHCK9IOJ4XT38TAWSJYAZOH+CY3H4B+ZZO/WAI4DXTSK
QRQ8/QEVRME8FXIPY+KCYDF44ACWV+QKPRZWHASJ8NEIQB+QJC
ECUUQDKMEXVVXF49HN4EEKTYQH9W3TTD+/PGMOGJ/JSKGPJYA8
YLQHAW8/9BANNU+K/UGRBCQ8M+XZGGGHKGCVCDOFRNT8UAGYKH
RZH9OBQ/OFZT+8XFPQZ+S+FCXB+TKPBQAVO3OS+IGJSLDUXIGX
4H9JJ3Z9E/ACVGTAW9IA9JGYDFMLGDSOS4P8G8A/9KCGFTHCFN
Z3G/UH9BRKYXR8Q/X3MF3GKVG4KUJJSARDXQ+ZRS8QXWVDBYFH
DYU9/MVJHAMY4KJB9SQ4TWKLC9Z4LXI+FGXCA8YBCQTR+N/HSJ
XP/IGHKMBDVDPW+3E9B+CG3HH88VXOJQREV4ZOGCUMYHG3JPZD
S9CX3EAPQAL8VDXWE+EECVSG4+Z8JZ9IVNLDO/ACI4QESFDCYM
SIGRPZUW4+UXOKKMYGY99HZZU9GIWWEFRMI+H+V9I93I/W/SN4
CLFVULOTRAQYFDZOV3YPXNWPXC+NPN4TIGNQUFZ9LCOFMVUUJA
H3BW4KC3YSQIOPESEE/PY8D3UT8/GMPTOZY+T9JTZPVUK/NKUA
3+YS34DQGNJJW3ZCZGATQFJESPIOVYLMQJIQ3VS+W88D3VHD+F
OFM+JEXALUXDIX3TK/NFOKQXJEDFHASSMRJAQYDY8DSMYHUNPM
9KUCCNH3KWYOLYTWVWBJ9WFVH8I4TIEFMQZBE4+WXCVHPMQLRF
E4QMFWGTMO8TGP4BEUWZPXJ993YXBMBAAZOPVXO9WVBQRHF/9G
K9TSKDVJLVP+SI/ZIOI/GVX9NBTSS3PG4MISF/HJGGAF/KH43B
CFC9J9S/9V9H+IPWQOP4O