Expressible in closed form

Express mail, Express, The Indian Express, ExpressCard, Maitree Express, Railway Express Agency, Orient Express, Jan Shatabdi Express, Shatabdi Express, PAL Express, Pune–Gorakhpur Express, Daily Express, Kollam–Visakhapatnam Express, Duronto Express, Bhopal–Jaipur Express, U.S. Express, Durg–Ajmer Express, Express (B. T. Express song), Bhopal–Bilaspur Express, Indian Express Limited, Secunderabad–Danapur Express, Express Weekly, Nagaon Express, Rourkela–Jagdalpur Express, ExpressJet, Auroville Express, Dayodaya Express, BG Express, Microsoft Visual Studio Express, Purvanchal Express, Yantian Express, Rishikesh–Barmer Express, Kamakhya–Gandhidham Express, Trinidad Express Newspapers, SATA Express, Express mail in the United States, Kota–Hisar Express, American Express, Wodeyar Express, Indore–Amritsar Express, Donyi Polo Express

Rajdhani Express, Vaigai Express, Aronai Express, Continental Express, Orient Express (Accor), Express trains in India, Rockfort Express, Limited express, Pony Express, Chalukya Express, Triveni Express, Nagaland Express, PCI Express, Wheeler Express, Visakhapatnam–Banaras Express, Kanchanjungha Express, Ajmer–Amritsar Express, Sharavati Express, Nilgiri Express, Chendur Express, Bhagmati Express, Solapur–Hassan Express, Ahmedabad–Kolkata Express, Jaipur–Lucknow Express, Sainik Express, Yesvantpur–Pandharpur Express, Islampur–Hatia Express, Ratlam–Bhind Express, Midnight Express, Sampark Kranti Express, Machilipatnam–Dharmavaram Express, Thai Express, Express train, Pune–Howrah Duronto Express, Jaynagar–Rourkela Express, Bikaner–Haridwar Express, Sampoorna Kranti Express, Jaipur–Secunderabad Express, Bhopal–Lucknow Express, Mysuru–Dharwad Express, Ananthapuri Express, Pothigai Express, Garba Superfast Express, AirPort Express, Guntur–Rayagada Express, Tatanagar–Buxar Express, Singrauli–Patna Express, Baidyanathdham Express, Gorakhpur–Okha Express, York Factory Express

Express mail, Express, The Indian Express, ExpressCard, Maitree Express, Railway Express Agency, Orient Express, Jan Shatabdi Express, Shatabdi Express, PAL Express, Pune–Gorakhpur Express, Daily Express, Kollam–Visakhapatnam Express, Duronto Express, Bhopal–Jaipur Express, U.S. Express, Durg–Ajmer Express, Express (B. T. Express song), Bhopal–Bilaspur Express, Indian Express Limited, Secunderabad–Danapur Express, Express Weekly, Nagaon Express, Rourkela–Jagdalpur Express, ExpressJet, Auroville Express, Dayodaya Express, BG Express, Microsoft Visual Studio Express, Purvanchal Express, Yantian Express, Rishikesh–Barmer Express, Kamakhya–Gandhidham Express, Trinidad Express Newspapers, SATA Express, Express mail in the United States, Kota–Hisar Express, American Express, Wodeyar Express, Indore–Amritsar Express, Donyi Polo Express, Rajdhani Express, Vaigai Express, Aronai Express, Continental Express, Orient Express (Accor), Express trains in India, Rockfort Express, Limited express, Pony Express, Chalukya Express, Triveni Express, Nagaland Express, PCI Express, Wheeler Express, Visakhapatnam–Banaras Express, Kanchanjungha Express, Ajmer–Amritsar Express, Sharavati Express, Nilgiri Express, Chendur Express, Bhagmati Express, Solapur–Hassan Express, Ahmedabad–Kolkata Express, Jaipur–Lucknow Express, Sainik Express, Yesvantpur–Pandharpur Express, Islampur–Hatia Express, Ratlam–Bhind Express, Midnight Express, Sampark Kranti Express, Machilipatnam–Dharmavaram Express, Thai Express, Express train, Pune–Howrah Duronto Express, Jaynagar–Rourkela Express, Bikaner–Haridwar Express, Sampoorna Kranti Express, Jaipur–Secunderabad Express, Bhopal–Lucknow Express, Mysuru–Dharwad Express, Ananthapuri Express, Pothigai Express, Garba Superfast Express, AirPort Express, Guntur–Rayagada Express, Tatanagar–Buxar Express, Singrauli–Patna Express, Baidyanathdham Express, Gorakhpur–Okha Express, York Factory Express, Mysuru–Talaguppa Express, Chennai Egmore–Guruvayur Express, Kirandul–Visakhapatnam Express, Nagpur–Jaipur Weekly Express, Millionaires Express, The New Indian Express, New Tinsukia–Amritsar Express, Hubballi–Gangavathi Express, Amarkantak Express, Chamarajanagar–Tirupati Express, Ajmer–Chandigarh Vande Bharat Express, Mysuru–Varanasi Express, Pearl City Express, Alappuzha–Chennai Express, Bhubaneswar Rajdhani Express, Bangalore Rajdhani Express, The Richmond River Express Examiner, Buffalo Courier-Express, Indore–Bareilly Weekly Express, Narasapur–Nidadavolu Express, Yesvantpur–Latur Express, Tatanagar–Ernakulam Express, Gorakhpur–Mailani Express, Mysuru–Ajmer Express, Kulik Intercity Express, Evening Express, Shanti Express, Ranakpur Express, Sainagar Shirdi–Visakhapatnam Express, Chhapra–Lokmanya Tilak Terminus Antyodaya Express, Rewanchal Express, OLT Express, Tatanagar–Thawe Express, Kaziranga Superfast Express, Kacheguda–Ashokapuram Express, The Express-Times, Patna–Kota Express, Armidale Express, Jodhpur–Indore Express, Yesvantpur–Karwar Express, Chennai–Thiruvananthapuram Superfast Express, Mumbai Central–Ahmedabad Shatabdi Express, Ranchi–Varanasi Express, München-Nürnberg-Express, Prayagraj Express, Jabalpur–H.Nizamuddin Express, Ahmedabad–Pune Duronto Express, Santragachi–Tambaram Antyodaya Express, Avantika Superfast Express, Local–express lanes, Tiruchirappalli–Thiruvananthapuram Intercity Express, CoreExpress, Andhra Pradesh Express, Mumbai CSMT–Howrah Duronto Express, Express, Inc., Siliguri–Bamanhat Express, Bilaspur–Bikaner Express, Yesvantpur–Kacheguda Express, Indore–Bhopal Express, Khandesh Express