diff --git a/src/blocks/elementsToNumbers.js b/src/blocks/elementsToNumbers.js
index 91d715f..8bb4936 100644
--- a/src/blocks/elementsToNumbers.js
+++ b/src/blocks/elementsToNumbers.js
@@ -12,7 +12,8 @@ module.exports =  {
   execute: function({elements}, elem){
     return elements
     .split(",")
-    .map((element)=>(require("./util/elements.js").indexOf(element.toLowerCase()) + 1))
+    .map((element)=>(element.toLowerCase().replace(/[^a-z]/g, "")))
+    .map((element)=>(require("./util/elements.js").indexOf(element) + 1))
     .filter((num)=>(num > 0))
     .join(",");
   },
diff --git a/src/blocks/numbersToElements.js b/src/blocks/numbersToElements.js
index c9ba375..bd901ae 100644
--- a/src/blocks/numbersToElements.js
+++ b/src/blocks/numbersToElements.js
@@ -12,6 +12,7 @@ module.exports =  {
   execute: function({numbers}, elem){
     return numbers
     .split(",")
+    .map((num)=>(num.replace(/[^0-9]/g, "")))
     .map((num)=>(parseInt(num)))
     .filter((num)=>(!isNaN(num)))
     .map((num)=>(require("./util/elements.js")[num-1]))