a=input()
l=list(a)
b=[]
for i in l:
    if(l.count(i)==1):
        b.append(i)
if(len(i)==0):
    print("#")
else:
    b.sort()
    for i in b:
        print(i,end='')
print("\n")
l.sort()
for i in l:
    print(i,end='')