How is the inheritance distributed among: a wife, 3 full brothers, 6 sons of full brothers, and 3 full sisters?

If the deceased leaves behind only a wife, three full brothers, and three full sisters, then the wife receives one-fourth as her prescribed share due to the absence of any inheriting offspring. The remainder goes to the full brothers and sisters by way of ta’sib (residuarily), with the male receiving the share of two females. The sons of the full brother receive nothing as they are excluded by the full brothers. The estate is divided into twelve shares: the wife receives three shares, each full brother receives two shares, and each full sister receives one share.