with open('test.txt', 'w') as file: file.write('(i.j),k,l,(m.n)\n') for i in range(9): for j in range(9): for k in range(3): for l in range(3): m = (i//3)*3+(i+k)%3 n = (j//3)*3+(j+l)%3 file.write(f'({i}.{j}),{k},{l},({m}.{n})\n')