Háu mitákuyepi,
Back to basics here! How is the Lakota letter u pronounced?!! I have always heard it as /u/ (as in American English "boot" but without w-glide), but I've seen it described in some sources as /ʊ/ (as in American English "put")...
Also, does the Lakota sound /o/ exist in American English? Any examples? We have it in Cockney English