import Data.List
x?y=x+signum(y-x)
v i[a,b]=i$w(==)a b
m=map;l=length;f=filter;w=zipWith
z a|(x,_:y)<-break(<'.')a=m read[x,y]
n[f,d]|v and[f,d]=[f]|let=f:n[w(?)f d,d]
main=interact$show.m(l.f(>1).m l.group.sort.(n=<<)).(\x->[x,f(v or)x]).m(m z.f(>".").words).lines