In Ewe [...] there are formed from subo 'to serve' two reduplicated forms, an infinitive subosubo 'to serve,' with a low tone on the first two syllables and a high one on the last two...
- Sapir (1921), a pag.80

[Shilluk] In the pronoun three forms may be distinguished by tone alone; e 'he' has a high tone and is subjective, -e 'him' (e.g., a chwol-e 'he called him') has a low tone and is objective, -e 'his' (e.g., wod-e 'his house') has a middle tone and is possessive.
- Sapir (1921), a pag.80

In Ewe [...] there are formed from 'subo' 'to serve' two reduplicated forms, an infinitive 'subosubo' 'to serve,' with a low tone on the first two syllables and a high one on the last two [...]
- Sapir (1921), a pag.80

[Shilluk] In the pronoun three forms may be distinguished by tone alone; 'e' 'he' has a high tone and is subjective, '-e' 'him' (e.g., 'a chwol-e' 'he called him') has a low tone and is objective, '-e' 'his' (e.g., 'wod-e' 'his house') has a middle tone and is possessive.
- Sapir (1921), a pag.80