diff --git a/2015/howe/.gitignore b/2015/howe/.gitignore
index aebcb1c75..02f6f69b6 100644
--- a/2015/howe/.gitignore
+++ b/2015/howe/.gitignore
@@ -5,3 +5,20 @@ prog
 prog.alt
 war-and-peace.txt
 whey.tmp
+1.tmp
+123.tmp
+A.tmp
+ABCABBA.tmp
+ABCD.tmp
+ABCDE.tmp
+ABCDEF.tmp
+ABCDEFGHIJK.tmp
+ABCEFGIJKDEFGHIJK.tmp
+ABXYEFCD.tmp
+ACBDEACBED.tmp
+ACDBECFD.tmp
+ACEBDABBABED.tmp
+CBABAC.tmp
+EMPTY.tmp
+patch.tmp
+ABD.tmp