Although distinct, these ranks were not utterly exclusive castes like those of India. It was possible to rise or sink from one rank to another. Rising upward could be achieved a number of ways, such as by gaining wealth, by gaining skill in some department, by qualifying for a learned profession, by showing conspicuous valour, or by performing some service to the community. An example of the latter is a person choosing to become a "briugu" (hospitaller). A "briugu" had to have his house open to any guests, which included feeding no matter how big the group. For the "briugu" to fulfill these duties, he was allowed more land and privileges, but this could be lost if he ever refused guests.