diff --git a/f6.c b/f6.c
new file mode 100644
index 0000000..9006333
--- /dev/null
+++ b/f6.c
@@ -0,0 +1,12 @@
+main(t){
+	int y,x;
+	for(t=0;;t++)
+	{
+		x=t*"6689"[t>>16&3]/24&127;
+		y=t&16383;
+		if (y==0 || x==0)
+			continue;
+		
+		putchar((30000000000/(y)&1)*35+(x)*y/400000000+((t>>8^t>>10|1>>14|x)&63));
+	}
+}