from itertools import combinations
L,C=map(int,input().split())
cipher=list(input().strip().split())
cipher.sort()
moum = ['a', 'e', 'i', 'o', 'u']
a=list(combinations(cipher,L))
for i in a:
answer=""
flag1,flag2=0,0
for check in i:
if check in moum:
flag1=1
else:
flag2+=1
if flag1==1 and flag2>=2:
print(*i,sep='')
알아야했던 것