Given the list below, I would like to find the sets within that list that are identical according to the order of their elements, generate that set, and show the number of times it appears in Lst. For example, in the below the identical sets are {N20029,N31055} which appears 2 times and {N19155,N31055} which appears 3 times.
Lst={{N20029,N31055},{N19155,N31055},{N18163,N31055},{N19155,N31055},{N18017,N31055},{N17149,N31055},{N17111,N31055},{N19155,N31055},{N20029,N31055}}