Template:Sliding puzzle image

[[File:{{{2}}}a1.png]] [[File:{{{2}}}a2.png]] [[File:{{{2}}}a3.png]] [[File:{{{2}}}a4.png]] [[File:{{{2}}}b1.png]] [[File:{{{2}}}b2.png]] [[File:{{{2}}}b3.png]] [[File:{{{2}}}b4.png]] [[File:{{{2}}}c1.png]] [[File:{{{2}}}c2.png]] [[File:{{{2}}}c3.png]] [[File:{{{2}}}c4.png]] [[File:{{{2}}}d1.png]] [[File:{{{2}}}d2.png]] [[File:{{{2}}}d3.png]] [[File:{{{2}}}d4.png]]

untested template from a month ago