Similar to Template:Year_in_region
Template:Categoryifexist
Template:Category if existsTemplate:CDMetro code
Template:Centurybox
Template:CenturyboxTemplate:CGuest
Template:CGuestTemplate:Chembox
Template:ChemboxTemplate:Chembox ATCCode
Template:Chembox ATCCodeTemplate:Chembox BoilingPt
Template:Chembox BoilingPtTemplate:Chembox Elements
Template:Chembox ElementsTemplate:Chembox Explosive
Template:Chembox Hazards
Template:Chembox HazardsTemplate:Chembox Identifiers
Template:Chembox IdentifiersTemplate:Chembox image sbs
Template:Chembox image sbsTemplate:Chembox Other
Template:Chembox Pharmacology
Template:Chembox PharmacologyTemplate:Chembox Properties
Template:Chembox PropertiesTemplate:Chembox Related
Template:Chembox RelatedTemplate:Chembox Structure
Template:Chembox StructureTemplate:Chembox Supplement
Template:Chembox SupplementTemplate:Chembox Thermochemistry
Template:Chembox ThermochemistryTemplate:Chembox2
Template:Chinese
Template:Infobox ChineseTemplate:CIA World Factbook
Template:CIA World FactbookTemplate:Cite conference
Template:Cite conferenceTemplate:Cite quran
Template:Cite QuranTemplate:CMain
Template:CMainTemplate:CNone
Template:CNoneTemplate:Cnote
Template:CnoteTemplate:Compact TOC
Template:Compact TOC