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βA % β ( & βA . 0% < A0% " <@B β A A. ! A@ # ! 6 " * βA % β & & βA . 0% < A0% " <@B β A A. , A@ # ,. ) 3 & & βA : A 0 % % % " β β =∑ = =∑ = ∑ ∑ = = # 4 " & " $ # ! ) " ! ! ( " ) & ) ) " & ) ) " & ) 4 ) 4 " ! ) ! ! ( ) " & " # 4 < & % " .)% !% ,% 40 .)% !% ,% 40 # 4 % " " # 4 % " " % % & + " " & " % # 4 % " " 3 # < + " % " & A % A # 4 % " " " " + " % " % A ! # " . 0% " $ ) % $ + ( & * ! $ $ " 8 - % ( % $ ( 4 $ ! - 8 ( ( " 4 ! # " , # 1 ! 1 1 , ( * $ $ C , 5 D E)1F >