primary = ['C#', 'ASP.NET', 'Python', 'Cocoa', 'Objective-C', 'SQL'];

secondary = ['HTML4', 'XHTML', 'HTML5', 'Javascript', 'Ajax', 'jQuery', 'Mac OS X', '.NET'];

tertiary = ['Drupal', 'FreeBSD', 'Debian', 'OpenBSD', 'SQL Server', 'Lucene', 'NHibernate', 'SVN', 'Django', 'MySQL', 'PostgreSQL', 'IIS', 'Git', 'Apache', 'JSON', 'Windows Server', 'Navision', 'Linux', 'Search Engines', 'CMS', 'Xcode', 'CSS'];

quaternary = ['PHP', 'XML', 'REST', 'Red Hat', 'Web Services', 'iPhone', 'MVC', 'Unit Testing', 'ORM', 'PDF', 'VB.NET', 'Unicode', 'Photoshop', 'DNS', 'MSMQ'];

quinary = ['XSLT', 'XPath', 'IoC', 'Bind9', 'Ruby', 'Ruby on Rails', 'Java', 'Japanese'];

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