import sys s1=input() def f1(s): di=dict() n=len(s) so='' for i in range(n): for j in range(i,n+1): if s[i:j].isdigit(): di[s[i:j]]=len(s[i:j]) m=max(di.values()) for j in di.keys(): if di[j]==m: so=so+j print(so,end=',') print(m) f1(s1)