▁person ▁mark ings . ▁It ▁provides ▁examples ▁of ▁a ▁neutral ▁system , ▁N omin ative - Acc us ative ▁sub system s , ▁Er g ative - Ab sol utive ▁sub system s , ▁and ▁split ▁sub system s , ▁varying ▁based ▁on ▁different ▁triggers . ▁ ▁Sem antics ▁ ▁Pl ur als ▁ ▁In ▁the ▁X av ante ▁language , ▁pl ur als ▁as ▁well ▁as ▁du als ▁are ▁used ▁to ▁mark ▁arguments ▁in ▁a ▁clause . ▁The ▁language ▁differenti ates ▁between ▁singular ▁n oun s ▁and ▁dual , ▁of ▁which ▁there ▁is ▁a ▁quantity ▁of ▁two , ▁and ▁pl ural , ▁in ▁which ▁the ▁argument ▁contains ▁more ▁than ▁two ▁items . ▁These ▁are ▁expressed ▁using ▁morph ological ▁methods , ▁including ▁units ▁that ▁are ▁used ▁in ▁a ▁variety ▁of ▁context s , ▁including ▁in ▁different ▁combinations . ▁These ▁mark ings ▁appear ▁to ▁be ▁used ▁particularly ▁for ▁human ▁subjects , ▁and ▁overall ▁are ▁vital ▁to ▁the ▁structure ▁of ▁a ▁clause ▁in ▁X av ante . ▁ ▁D ual ▁arguments ▁in ▁X av ante , ▁particularly ▁those ▁referring ▁to ▁people , ▁use ▁one ▁of ▁several ▁possible ▁morph ological ▁units . ▁In ▁order ▁to ▁describe ▁a ▁pair ▁of ▁human ▁arguments , ▁it ▁is ▁first ▁important ▁to ▁distinguish ▁between ▁the ▁first , ▁second , ▁and ▁third ▁person . ▁For ▁using ▁the ▁dual ▁in ▁the ▁first ▁person ▁as ▁a ▁subject , ▁such ▁as ▁in ▁‘ We ▁both ’ , ▁the ▁morph eme ▁ ʔ wa ▁is ▁used ▁in ▁the ▁beginning ▁of ▁the ▁clause , ▁with ▁d ĩ