Help with abreviations of condecorations

Hello Gentlemen,

im not sure if is the right place to put my solicitation.
im trying to identificate these abreviations bellow.
I believe that abreviations are from German or Austrian WW1/WW2 period.
Can anyone help me ?
By the way , exist a list of abreviations for world condecorations ???
Im interested in WW2 period.
Thx in advance

Alexandre

PK4
PH3
PE1
BM4x
SA3ax
WM3
WK3x
WF3b
BZ3ax
BrK2
OK1
LK
OM3K
WF3ax
HH