P3R1E1S1I1D2I1U1M3S1
15 points
PRESIDIUMS is validvalid
PRESIDIUM, a Soviet executive committee [n]
PRESIDIUM, (Latin) a standing committee in the former Soviet Union, also PRAESIDIUM [n]
PRESIDIUM, a Soviet executive committee [n]
PRESIDIUM, (Latin) a standing committee in the former Soviet Union, also PRAESIDIUM [n]