First of all i used (http://www.picisto.com/) Click the create collage link on the top then choose the 3 vertical blank template , Afterwards i used imgflip to create all the memes then returned to picisto the three blank templates will be visible now click on the upload button then i uploaded the first one likewise the second and third. When you're finished with 3 memes save it then again make 3 vertical collages the process goes on and on till you make the desired number of memes then you'll many pics consisting of 3 memes, You'll have different files so to make them in a single pic i used paint, Open paint then click 'paste from' then navigate where you have saved your pics the one which you downloaded from picisto. When you'll import the second image align it right beneath the first as the picisto watermark gets hidden { Pro tip- Use same colours for all background so it'll look like it is made on a single strip =) } Then keep repeating the process until you import all the memes then save as PNG ;D