Thirty men and one woman have been charged with offences linked to child sexual exploitation in Huddersfield.
The offences relate to five women when they were aged between 12 and 18, and are alleged to have taken place between 2005 and 2012.
Charges those accused face include rape, trafficking and sexual assault.
Twelve men, who cannot be named for legal reasons, have been charged with "numerous offences in connection with the same investigation", police said.
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The accused are due at Kirklees Magistrates' Court on 5 and 6 September.
West Yorkshire Police said the accused who can be named are:
- Banaras Hussain 37, of Shipley, charged with one count of rape of a female over 16
- Banaris Hussain, 35, of Huddersfield, charged with one count of rape of a girl aged 13-15
- Mohammed Suhail Arif, 30, of Huddersfield, charged with rape of girl aged 13-15
- Iftikar Ali, 37, of Huddersfield, charged with attempted rape of girl aged 13-15 and three counts of rape of a girl aged 13-15
- Mohammed Sajjad, 31, of Huddersfield, charged with four counts of rape of a female age 13-15, one rape of a girl under 13 and facilitating the commission of a child sex offence
- Fehreen Rafiq, 38, of Huddersfield, charged with two counts of facilitating the commission of a child sex offence
- Umar Zaman, 30, of Huddersfield, charged with two counts of rape of a female aged 13-15
- Basharat Hussain, 31, of Huddersfield, charged with two counts of rape of a female aged 13-15
- Amin Ali Choli, 36, of Huddersfield, charged with two counts of rape of a female over 16-years-old
- Shaqeel Hussain, 35, of Dewsbury, charged with rape of a female aged 13-15 and two counts of trafficking
- Mubasher Hussain, 35, of Huddersfield, charged with rape of a female aged 13-15 and sexual assault
- Abdul Majid, 34, of Huddersfield, charged with two counts of rape of female aged 13-15
- Mohammed Dogar, 35, of Huddersfield, charged with two counts of facilitating the commission of child sex offence
- Usman Ali, 32, of Huddersfield, charged with two counts of rape of a female aged 13-15
- Mohammed Waqas Anwar, 29, of Huddersfield, charged with five counts of rape of a female aged 13-15
- Gul Riaz, 42, of Huddersfield, charged with rape of a female aged 13-15
- Mohammed Akram, 41, of Huddersfield, charged with two counts of trafficking with a view to sexual exploitation of a female and rape of a female aged 14-15
- Manzoor Akhtar, 29, of Huddersfield, charged with trafficking and three counts of rape of a female aged 13-15
- Samuel Fikru, 30, of Camden, charged with two counts of rape of a female aged 13-15