diff --git a/.gitpod.Dockerfile b/.gitpod.Dockerfile
index a13a53d5..d62ae497 100644
--- a/.gitpod.Dockerfile
+++ b/.gitpod.Dockerfile
@@ -21,5 +21,5 @@ RUN curl -fsSL https://dl.google.com/go/go${GO_VERSION}.linux-amd64.tar.gz | tar
     printf '%s\n' 'export GOPATH=/workspace/go' \
                       'export PATH=$GOPATH/bin:$PATH' > $HOME/.bashrc.d/300-go
 
-RUN sudo apt update && sudo apt install -y universal-ctags tree nkf
+RUN sudo apt update && sudo apt install -y universal-ctags tree nkf wamerican
 
diff --git a/examples/basic/streams/README.md b/examples/basic/streams/README.md
index dff3717d..8098e367 100644
--- a/examples/basic/streams/README.md
+++ b/examples/basic/streams/README.md
@@ -2,8 +2,8 @@
 
 このディレクトリには以下のサンプルがあります。
 
-| file                | example name       | note                      |
-|---------------------|--------------------|---------------------------|
-| using\_nopcloser.go | streams\_nopcloser | io.NopCloser についてのサンプルです. |
-
-
+| file               | example name        | note                                 |
+| ------------------ | ------------------- | ------------------------------------ |
+| using_nopcloser.go | streams_nopcloser   | io.NopCloser についてのサンプルです. |
+| basic.go           | streams_pipe_basic  | io.Pipe の基本的なサンプルです.      |
+| basic2.go          | streams_pipe_basic2 | io.Pipe() のサンプルです。           |
diff --git a/examples/basic/streams/pipes/basic.go b/examples/basic/streams/pipes/basic.go
index e5bf19e3..3f90d03d 100644
--- a/examples/basic/streams/pipes/basic.go
+++ b/examples/basic/streams/pipes/basic.go
@@ -102,4 +102,22 @@ func Basic() error {
 	io.Copy(filterW, pr)
 
 	return nil
+
+	/*
+	   $ task
+	   task: Task "build" is up to date
+	   task: [run] ./try-golang -onetime
+
+	   ENTER EXAMPLE NAME: streams_pipe_basic
+
+	   [Name] "streams_pipe_basic"
+	   WARS
+	   WARSHIP
+	   WARSHIP'S
+	   WARSHIPS
+
+
+	   [Elapsed] 108.994024ms
+	*/
+
 }
diff --git a/examples/basic/streams/pipes/basic2.go b/examples/basic/streams/pipes/basic2.go
index fd381d45..1bd081de 100644
--- a/examples/basic/streams/pipes/basic2.go
+++ b/examples/basic/streams/pipes/basic2.go
@@ -75,4 +75,19 @@ func Basic2() error {
 	}
 
 	return nil
+
+	/*
+	   $ task
+	   task: [build] go build .
+	   task: [run] ./try-golang -onetime
+
+	   ENTER EXAMPLE NAME: streams_pipe_basic2
+
+	   [Name] "streams_pipe_basic2"
+	   [pr]                 helloworld
+
+
+	   [Elapsed] 252.58µs
+	*/
+
 }
diff --git a/examples/basic/streams/using_nopcloser.go b/examples/basic/streams/using_nopcloser.go
index ffceb649..7704219c 100644
--- a/examples/basic/streams/using_nopcloser.go
+++ b/examples/basic/streams/using_nopcloser.go
@@ -58,4 +58,22 @@ func UsingNopCloser() error {
 	_ = reader.Close()
 
 	return nil
+
+	/*
+	   $ task
+	   task: Task "build" is up to date
+	   task: [run] ./try-golang -onetime
+
+	   ENTER EXAMPLE NAME: streams_nopcloser
+
+	   [Name] "streams_nopcloser"
+	   [nopcloser.Read]     [104 101 108]
+	   >>                   before NopCloser.Close
+	   >>                   after  NopCloser.Close
+	   [_readcloserimpl]    Close() called
+
+
+	   [Elapsed] 36.09µs
+	*/
+
 }