(\W|^)([A-Za-z,]+\s)\2 for full duplications with or without commas

(\W|^)([A-Za-z,]+)(\sAND\s)\2 x and x

(\W|^)([A-Za-z,]+)(\sor\s)\2 x or x

USE these regular expression for concordance:

(\W|^)(.+)\W{1,}\2\W for full duplications

(\W|^)(.+\s)and\s\2 x and x

(\W|^)(.+\s)or\s\2 x or x

test them here: https://www.regextester.com/93564

([A-z]{1,}\s)+\1

(\W|^)(.+)\W{1,}\2 for full duplications

USE this regular expression for concordance: [^A-z]([A-z]{1,}[^A-z])+\1

([A-z]{1,}\s)+\1

http://ucrel.lancs.ac.uk/publications/CL2003/papers/wang.pdf

USE this regular expression for concordance: [^A-z]([A-z]{1,}[^A-z])+\1

http://www.arch.apsl.edu.pl/polilog/pliki/nr6/21.pdf

https://www.sas.upenn.edu/~haroldfs/echoword/

http://www.arch.apsl.edu.pl/polilog/pliki/nr6/21.pdf http://linguistics.berkeley.edu/~inkelas/Papers/2013HandbookOfDerivationInkelas.pdf

Contrastive reduplication https://ase.tufts.edu/cogstud/jackendoff/papers/salad-salad.pdf

Cross-linguistic https://journals.uair.arizona.edu/index.php/AZSLAT/article/download/21274/20854

Corpus http://ucrel.lancs.ac.uk/publications/CL2003/papers/wang.pdf

https://daily.jstor.org/the-nitty-gritty-on-reduplication-so-good-you-have-to-say-it-twice/