Complex sentence: Ofo distinguishes between alienable and inalienable possession through the use of a prefix for first -, second -, and third-person singular and first-person dual, abbreviated as 1sg, 2sg, 3sg, and 1du, respectively.
Split into simpler sentences: Ofo distinguishes between alienable and inalienable possession by the use of a prefix for first -, second -, and third-person singular as well as first-person dual. That can be abbreviated to 1sg, 2sg, 3sg, and 1du, respectively.