cục 
office, department; piece, block, chunk [ cục ] : office, department; piece, block, chunk
Rhyme Family: UC
cục Most Common Compounds Set 1:
bố cục Most Common Compounds Set 2 :
Cục cục diện cục office, department; piece, block, chunk cục bố cục Cục cục diện 
The Public Security Bureau is now investigating the case. 
Das Büro für öffentliche Sicherheit untersucht diesen Fall.