--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/run.sh	Tue Mar 12 06:43:54 2019 +0000
@@ -0,0 +1,28 @@
+#!/bin/bash
+
+size=1920x1080
+pats=(
+    'P3  1 1  1  1 0 0'
+    'P3  2 2  1  0 0 0  1 0 0  1 0 0  0 0 0'
+    'P3  2 2  1  1 0 0  0 0 0  0 0 0  1 0 0'
+
+    'P3  1 1  1  0 1 0'
+    'P3  2 2  1  0 0 0  0 1 0  0 1 0  0 0 0'
+    'P3  2 2  1  0 1 0  0 0 0  0 0 0  0 1 0'
+
+    'P3  1 1  1  0 0 1'
+    'P3  2 2  1  0 0 0  0 0 1  0 0 1  0 0 0'
+    'P3  2 2  1  0 0 1  0 0 0  0 0 0  0 0 1'
+
+    'P3  1 1  1  1 1 1'
+    'P3  1 1  2  1 1 1'
+    'P3  1 1  1  0 0 0'
+)
+
+for i in $(seq 0 $(("${#pats[@]}" - 1))); do
+    index=$(printf '%02d' "$i")
+    convert ppm:- -write mpr:tile +delete \
+            -size "$size" tile:mpr:tile "$index".png <<< "${pats[i]}"
+done
+
+feh -F