First order functions

First, First aid, First to file and first to invent, First Minister of Scotland, First Minister and Deputy First Minister of Northern Ireland, First Beeline, First London, First Boston, First West Yorkshire, First baseman, First Student, FIRST Robotics Competition, First ladies of Nevada, First Worcester, First contact, First Act, First Time, First woman, First Love, First degree, First impression, First aid kit, First family, B2 First, First ascent, First Fruits, First Nations, First American, First Union, First Line, First man or woman, First person, First ladies of Pennsylvania, First Horizon Bank, First Light, First Fleet, First of May, Who's on First?, Credit Suisse First Boston, First lady, First Glasgow

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First, First aid, First to file and first to invent, First Minister of Scotland, First Minister and Deputy First Minister of Northern Ireland, First Beeline, First London, First Boston, First West Yorkshire, First baseman, First Student, FIRST Robotics Competition, First ladies of Nevada, First Worcester, First contact, First Act, First Time, First woman, First Love, First degree, First impression, First aid kit, First family, B2 First, First ascent, First Fruits, First Nations, First American, First Union, First Line, First man or woman, First person, First ladies of Pennsylvania, First Horizon Bank, First Light, First Fleet, First of May, Who's on First?, Credit Suisse First Boston, First lady, First Glasgow, First Things First (album), First Things First, First responder, Kʼómoks First Nation, Deputy First Minister of Scotland, First-person narrative, The First Noel, First National Pictures, Singaporeans First, FIRST Lego League Challenge, First Cut, First Minister of Wales, First Hampshire & Dorset, FIRST Tech Challenge, First-class cricket, First Ministers' conference, Ɂakisq̓nuk First Nation, First Lady of the United States, First-order logic, First ladies and gentlemen of Alaska, First Nations in Ontario, First Step, First Artists, First Nehru ministry, First Kiss, First-rate, First Lady of Ethiopia, First ladies and gentlemen of North Carolina, First South West, First-person (video games), Stoney Nakoda First Nation, First Album, First strike, First and Last, First ladies of Wisconsin, First Republic of Korea, First ladies and gentlemen of Guam, First Data, First grade, First Chicago Bank, First Lady of Venezuela, First Nations in Canada, Breadth-first search, First Presidency (LDS Church), First Scotland East, First Merchants Corporation, First minister, First American Financial Corporation, Be First, First ladies and gentlemen of Oklahoma, First-foot, First ladies and gentlemen of the Philippines, First Lord of the Admiralty, First West of England, First Growth, For the First Time, First Nations in Alberta, Dehcho First Nations, First day of issue, First pass effect, First-hitting-time model, First Blood, RSS First Step, First sergeant, People-first language, First principle, First Hill, Seattle, FIRST Championship, Love at First Sight, The First 48, First-wave feminism, FirstGroup, Wizard's First Rule, First ladies and gentlemen of Mexico, First Things First (talk show), First Folio, First Expired, First Out, America First, Ceremonial first pitch, List of first ladies of Minnesota, First Lady of the Gambia, First ladies of Maryland, First hand, First lieutenant, First ladies of Hawaii, First World problem, First class, Mitaanjigamiing First Nation, Certified first responder, Maxillary first premolar, First Church, First Evil, First ladies and gentlemen of Gabon, First Internet Bank, The First, First Eagle Investments, First Lady of Brazil, First ladies and gentlemen of Indonesia, First Second Books, First Twenty Years, First ladies of North Dakota, Sq'éwlets First Nation, First-mover advantage, First white child, Sipekne'katik First Nation, Sofia the First, First ladies and gentlemen of India, First ladies of Missouri, First party, First Choice (UK)