There is no simple independent word for this kind of relationship,
a male's brother-in-law. A personal prefix goes with the dependent noun stem
/=iitaaw-/ a male's brother-in-law to make a full word:
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niitaa my brother-in-law (a male's brother-in-law) (1s-3s)
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giitaa your brother-in-law (a male's brother-in-law) (2s-3s)
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wiitaan his brother-in-law
- [MN] wiitaan his brother-in-law/brothers-in-law (3s-3')
- [BL] wiitaan his brother-in-law (3s-3's)
- [BL] wiitaa’ his brothers-in-law (3s-3'p)