Here is a series of address references given as word addresses: $1,20,9,4,17,9,10,4,9,20,25,13,12.$ Assume a direct$-$mapped cache with $4$ one$-$word blocks that initially empty, label each memory reference in the list as a hit or a miss and show the final cache contents in the table below. Assume memory address is $6-$bit long $($given in parenthesis$).$ What is the miss rate?