1915D - Нестандартная обработка языка

t = int(input())
for k in range(t):
    n = int(input())
    s = input()
    if n == 2:
        ptint(s)
        continue
    if n == 3:
        print(s)
        continue
    hlp = s.replace('a', 'V').replace('e', 'V').replace('b', 'C').replace('c', 'C').replace('d', 'C')
    i = 0
    #print("hlp", hlp)
    ans = ''
    while True:
        #print("i ", i)
        if i == n - 3:
            #print("A")
            ans += s[n - 3: n]
            break
        elif i == n - 2:
            #print("B")
            ans += s[n - 2: n]
            break
        elif hlp[i + 3] == 'C':
            #print("i ", i)
            ans += s[i] + s[i + 1] + s[i + 2] + '.'
            i += 3
        elif hlp[i + 3] == 'V':
            ans += s[i] + s[i + 1] + '.'
            i += 2
    print(ans)