ULM, Unlimitedcoin
UNDEV, Undev
UTRMP, Utrump
VEIL, Veilcoin
VENTC, Venture
VTY, Victoriouscoin
WMC, WMcoin
WOK, Workercoin
X2C, Xecoin
XB, Bitcryptcoin
XBTS, Beatcoin
XCCC, Cicciolinacoin
XCHE, Checoin
XCR, Crinklecoin
XEN, Xenixcoin
XGLC, Gulfcoin
XPN, Ponycoin
XPZ, Plasmacoin
XUM, Luminositycoin
XXX, Xxxcoin
YOP, Yopony