7) sorting

You are an intern at GUVI and the company wants to organise its data and delete unnecessary extra storage elements used. You are given k arrays of unequal dimensions. Sort the k arrays individually and concatenate them.
 

Input Description:
First line contains the number of arrays. Subsequent lines contain the size of the array followed by the elements of the array.

Output Description:
An array containing the sorted elements of k sorted arrays

Sample Input :
3
2
98 12
6
1 2 3 8 5 9
1
11

Sample Output :
12 98 1 2 3 5 8 9 11

my code is:

k = input()

A = input()

a = input().split()

x = str(sorted(a))

B = input()

b = input().split()

y = str(sorted(b))

C = input()

c = input().split()

z = str(sorted(c))

N = (x + y + z)

print(N)

the output is :

['12', '98']['1', '2', '3', '5', '8', '9']['11']

i want the numbers with only space seperated.

i have tried join. it is not working

kindly provide me the correct syntax