What is the share of each heir from the mentioned inheritance?

If the heirs of the deceased are limited to the mother, wife, father, and siblings, then the inheritance is divided as follows: The mother receives one-sixth due to the presence of a number of siblings. The wife receives one-fourth due to the absence of a child. The remainder goes to the father by ta’sib (residuary heirship). The siblings receive nothing because they are excluded by the father through hijb hirman (exclusion from inheritance). The siblings here cause the mother's share to be reduced from one-third to one-sixth, and they themselves are excluded by the father. The common denominator for the inheritance is twelve shares: The mother receives two shares, the wife receives three shares, and seven shares remain for the father.