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from collections import defaultdict
s = input()
a = input()
b = input()
n = len(s)
n1 = len(a)
n2 = len(b)
x = ""
d = defaultdict(lambda:0)
for i in s:
    if i in d :
        d[i]+=1
    else:
        d[i]=1
p = []
for i in b:
    p.append(d[i])
t = min(p)
q = []
for i in a:
    if i in set(b)  and d[i]-t >=0:
        q.append(d[i]-t)
    else:
        q.append(d[i])

c = min(q)
x = a*c + b*t
z = ""
if t==0 and c==0:
    print("".join(sorted(s)))
elif t==0:
    for i in set(s):
        if i not in (set(a)) :
            z+=i*d[i]
        else:
            z+=i*(d[i]-c)
    print(x+"".join(sorted(z)))
elif c==0:
    for i in set(s):
        if i not in (set(b)) :
            z+=i*d[i]  
        else:
            z+=i*(d[i]-t)
    print(x+"".join(sorted(z)))
else:
    for i in set(s):
        if i not in (set(b)) and i not in set(a) :
            z+=i*d[i]  
    
    print(x+"".join(sorted(z)))
