def num_list():list=[1,2,3,4]list1=[]for i in list:for j in list:if i==j:continue for k in list:if(i==k)or(j==k):continue for n in list:if(i==n)or(j==n)or(k==n):continue num=1000*i+100*j+10*k+n list1.append(num)return list1 def sushu(num):...