n = int(input())
seats = [[1] * 5 for i in range(20)]
num = list(map(int, input().split()))


def seat(k):
    if k == 1:
        for i in range(20):
            for j in range(5):
                if seats[i][j]:
                    seats[i][j] = 0
                    return i * 5 + j + 1
    elif k ==
 
 2:

        for i in range(20):
            for j in range(4):

                if seats[i][j] and seats[i][j + 1]:
                    seats[i][j] = 0
                    seats[i][j + 1] = 0
                    return i * 5 + j + 1
        return None
    elif k == 3:
        for i in range(20):
            for
 
 j in range(3):
                if seats[i][j] and seats[i][j + 1] and seats[i][j + 2]:
                    seats[i][j] = 0
                    seats[i][j + 1] = 0
                    seats[i][j + 2] = 0

                    return i * 5 + j + 1
        return None

    elif k == 4:
        for i in range
 
(20):
            for j in range(2):
                if seats[i][j] and seats[i][j + 1] and seats[i][j + 2] and seats[i][j + 3]:
                    seats[i][j] = 0
                    seats[i][j + 1] = 0
                    seats[i][j + 2] = 0
                    seats[i][j + 3] = 0

                    return i * 5 + j + 1

        return None

    elif k == 5:
        for i in range(len(seats)):
            if seats[i] == [1] * 5:
                seats[i] = [0] * 5
                return i * 5 + 1
        return None


for k in num:
    first = seat(k)
    if first:
        for i in range(first, first + k):
            print(i, end=" ")
    else:
        for j in range(k):
            print(seat(1), end=" ")

    print()