| <html>
|   <head>
|     <style>
|       " <!-- "
|   <body>
|     "x"

| <html>
|   <head>
|     <style>
|       " <!-- "
|     " "
|   <body>
|     "--> "
|     "x"

| <html>
|   <head>
|     <style>
|       " <!--> "
|   <body>
|     "x"

| <html>
|   <head>
|     <style>
|       " <!---> "
|   <body>
|     "x"

| <html>
|   <head>
|   <body>
|     <iframe>
|       " <!---> "
|     "x"

| <html>
|   <head>
|   <body>
|     <iframe>
|       " <!--- "
|     "->x"
|     " --> "
|     "x"

| <html>
|   <head>
|     <script>
|       " <!-- "
|     " "
|   <body>
|     "--> "
|     "x"

| <html>
|   <head>
|     <title>
|       " <!-- "
|     " "
|   <body>
|     "--> "
|     "x"

| <html>
|   <head>
|   <body>
|     <textarea>
|       " <!--- "
|     "->x"
|     " --> "
|     "x"

| <html>
|   <head>
|     <style>
|       " <!</-- "
|   <body>
|     "x"

| <html>
|   <head>
|   <body>
|     <p>
|     <xmp>

| <html>
|   <head>
|   <body>
|     <xmp>
|       " <!-- > --> "

| <html>
|   <head>
|     <title>
|       "&"
|   <body>

| <html>
|   <head>
|     <title>
|       "<!--&-->"
|   <body>

| <html>
|   <head>
|     <title>
|       "<!--"
|   <body>

