101971 - Yes, five lines
N. Lygeros
Yes, five lines for the last shape. Grok, If you take the column 1 and you add it to the column 2, you will get the column 3. Keep in mind the shapes and you will see that A which is divided by a middle vertical, is indeed the answer. Another way to see is to consider that the shapes of columns 1 and 2 are included in the shapes of column 3, for each row.