AB) = (M922 (92) Prob(BB BB) = (M")33 (93) Prob(AA A1= (M")14 (94) Prob(AB A) = (M")24 (95) Prob(AB B) = (M"hs (96) Prob(BB B) = (97) Prob(AA —0. 0) = (M")16 (98) Prob(AB 0) = (M"126 (99) Prob(BB 0) = (Mn)34. (100) We can define the limiting matrix A4(' ) = lim Mn = rig (101) 111

lities. ao and 4. and that this dependence may be especially strong when n is large. We compute the n-step pair survival probabilities directly as Prob(AA —* AA) = a2" Prob(AB —a. AB) = (bcr Prob(BB BB) = dm. (5) (6) (7) Then, by considering the possibility that one of the individuals might die