Equation Icon  h(1)= 1h(1,−1)+ h(1,0)+ sh(1,1)+ O(s2), (22.11 ) αβ s αβ αβ αβ (2) 1- (2,−2) 1-(2,− 1) (2,0) (2,0,ln) hαβ = s2hαβ + shαβ + hαβ + ln shαβ + O (s ), (22.12 )