Customer Group in Magento

I need a few simple Magento php lines of code. I have this: if(Mage::getSingleton('customer/session')->isLoggedIn()) { $customerData = Mage::getSingleton('customer/session')->getCustomer(); echo $customerData->getGroup_id(); } Which prints out: 22,23,24,25,26,27. Each of those numbers relate to "customer_group_id" which gives some text from "customer_group_code" in the "customer_group" table in Magento. I need a simple query that will take those numbers and get print out the text from "customer_group_code" for each number in the list that "echo $customerData->getGroup_id();" prints. I attached a screenshot.