diff --git a/.gitignore b/.gitignore
index b512c09..420f7de 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1 +1,3 @@
-node_modules
\ No newline at end of file
+node_modules
+yarn-error.log*
+yarn.lock*
\ No newline at end of file
diff --git a/lib/blink.js b/lib/blink.js
index c391a9f..07b6cc7 100644
--- a/lib/blink.js
+++ b/lib/blink.js
@@ -3,5 +3,8 @@ var marked = require('marked')
 module.exports = function (str) {
   var md = marked(str)
   // TODO
-  return null
+  const reg = /(\@\@)(.*?)(\@\@)/g
+  return md.replace(reg, (...args) => {
+    return `<blink>${args[2] || null}</blink>`;
+  })
 }
\ No newline at end of file
diff --git a/lib/capture.js b/lib/capture.js
index a08ee57..efa2d47 100644
--- a/lib/capture.js
+++ b/lib/capture.js
@@ -1,3 +1,6 @@
 module.exports = function (str) {
   // TODO
+  const reg = /\=(\d+)/;
+  const result = str.match(reg);
+  return result && result[1];
 }
\ No newline at end of file
diff --git a/lib/capture_breakword.js b/lib/capture_breakword.js
index a08ee57..e6a2b33 100644
--- a/lib/capture_breakword.js
+++ b/lib/capture_breakword.js
@@ -1,3 +1,6 @@
 module.exports = function (str) {
   // TODO
+  const reg = /(?:(?:\bx)|(?:\w+[^x]))\=(\d+)\b/;
+  const result = str.match(reg);
+  return result && result[1];
 }
\ No newline at end of file
diff --git a/lib/quantified_group.js b/lib/quantified_group.js
index a08ee57..575c6fd 100644
--- a/lib/quantified_group.js
+++ b/lib/quantified_group.js
@@ -1,3 +1,5 @@
 module.exports = function (str) {
   // TODO
+  const reg = /^(0x[a-fA-F0-9]{2}\s*){8}$/;
+  return reg.test(str);
 }
\ No newline at end of file
diff --git a/lib/quotes.js b/lib/quotes.js
index a08ee57..32d2ffe 100644
--- a/lib/quotes.js
+++ b/lib/quotes.js
@@ -1,3 +1,5 @@
 module.exports = function (str) {
   // TODO
+  const reg = /\".*?\"/g;
+  return str.match(reg);
 }
\ No newline at end of file