A Sangha of monks consisting of a group of five—unanimous, acting legitimately—is able to do all legal procedures except two: ordination within the central Ganges plain and rehabilitation. A Sangha of monks consisting of a group of ten—unanimous, acting legitimately—is able to do all legal procedures except one: rehabilitation. A Sangha of monks consisting of a group of twenty—unanimous, acting legitimately—is able to do all legal procedures. A Sangha of monks consisting of a group of more than twenty—unanimous, acting legitimately—is able to do all legal procedures. If a legal procedure that requires a group of four is done with a nun as the fourth member, it’s invalid and not to be done. If a legal procedure that requires a group of four is done with a trainee nun as the fourth member, with a novice monk as the fourth member,