{(4,9),(0,−2),(0,2),(5,4)} {(5,−5),(5,−4),(7,−2),(3,8)} {(4,3),(8,0),(5,2),(−5,0)} {(6,9),(9,−4),(6,1),(−5,11)} {(4,12),(2,6),(−5,6),(3,−2)}