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l1 = [1,2,7,12,4,9,5]
l2 = [5,1,10,11,2]
l3 = l1 + l2
l3.sort()
# print(set(l3))   #È¥³ýÖظ´ÔªËØ·½·¨Ò»

l4 = []           #È¥³ýÖظ´ÔªËØ·½·¨¶þ
for x in l3:
 if not x in l4:
  l4.append(x)
print(l4)