Similar to 三文字頭字語
RWD
RWDSBP
SBPSDSU
SGHWR
SIDSPACE
SIM
SimSIV
SIVSMORC
SNS
SNSSOA
SOASOB
SOBSSL
SSLSTEM
STEM (disambiguation)TDS
TDSTGIF
TGV
TGV▲1 trendsTIM
TIMTKO
TKO (disambiguation)TKP
TKPTLS
TLSTOC
TOCTPO
TPOTPP
TPPTTG
UCC
UCCUGA
UGAUPA
UpaVIG
Vig