Dee Dee went to market to buy some eggs. There are 2 type of egg cartons available in the shop. One type contains 6 eggs and the other type contains 8 eggs. Dee Dee wants to buy exactly N eggs. Calculate the minimal number of egg cartons she must buy.

INPUT

First line of input gives T, the number of test cases.
T lines follow, each having N, the number of eggs.

OUTPUT

Print the minimal number of egg cartons she must buy.
If it's impossible to buy exactly n eggs, print -1.

CONSTRAINTS
1 ≤ T ≤ 50
1 ≤ N ≤ 100

SAMPLE INPUT
2
20
24

SAMPLE OUTPUT
3
3

Explanation

For first case, she should buy 2 cartons containing 6 eggs and 1 carton containing 8 eggs. In total, she buys 3 egg cartons.
For second case, there are two ways to buy 24 eggs: buy 4 cartons containing 6 eggs or buy 3 cartons containing 8 eggs. Minimize the number of cartons.
noc = input()
while noc:
    noc -=1
    qty = input()
    eights = 0
    sixs   = 0
    nums = qty
    while qty > 5:
    	if qty % 8 == 0:
    		eights += 1
    		qty-=8
    	else:
    		sixs +=1
    		qty-= 6
    if eights * 8 + sixs * 6 == nums:
    	print eights + sixs
    else:
    	print -1