where A , B and C are We first look at A part. 〈 1 l 〉 〈 1 ,N +1 〉〈 N +1 ,l 〉 and 〈 li 〉 〈 l,N +1 〉〈 N +1 ,i 〉 can split into sums of terms as in (18) and (19). For a given l , as in M = 1 case, they insert the two gluons corresponding to the graviton ( N +1)$_{h}$ into positions between 1, l and l , i respectively. After this insertion, we consider the insertion of gluons corresponding to ( N + 2)$_{h}$. With the eikonal identity(A9), for 1 < l < i , 〈 1 ,N +1 〉 〈 1 ,N +2 〉〈 N +2 ,N +1 〉 and 〈 N +1 ,i 〉 〈 N +1 ,N +2 〉〈 N +2 ,i 〉 in (23) can be given as 16 〈 1 , N + 1 〉 〈 1 , N + 2 〉〈 N + 2 , N + 1 〉 = ( 〈 1 , r 〉 〈 1 , N + 2 〉〈 N + 2 , r 〉 + 〈 r, N + 1 〉 〈 r, N + 2 〉〈 N + 2 , N + 1 $_{〉}$) , 〈 N + 1 , i 〉 〈 N + 1 , N + 2 〉〈 N + 2 , i 〉 = 〈 t + 1 , i 〉 〈 t + 1 , N + 2 〉〈 N + 2 , i 〉 + 〈 N + 1 , t + 1 〉 〈 N + 1 , N + 2 〉〈 N + 2 , t + 1 $_{〉}$) , (26) C = ig N − 2 ( − κ 2 ) 2 〈 1 i 〉 4 〈 12 〉〈 23 ... 〈 N 1 〉 × ∑ l ∈{ g $^{+}$} s$_{l,N}$$_{+2}$ 〈 l 1 〉 〈 N + 2 , 1 〉〈 l, N + 2 〉 〈 li 〉 〈 l, N + 2 〉〈 N + 2 , i 〉 (25) × ∑ k ∈{ g $^{+}$} s$_{k,N}$$_{+1}$ 〈 k 1 〉 〈 N + 1 , 1 〉〈 l, N + 1 〉 〈 ki 〉 〈 k, N + 1 〉〈 N + 1 , i 〉 . B = ig N − 2 ( − κ 2 ) 2 〈 1 i 〉 4 〈 12 〉〈 23 ... 〈 N 1 〉 × ∑ l ∈{ g $^{+}$} s$_{N}$$_{+2}$$_{,N}$$_{+1}$s$_{l,N}$$_{+2}$ 〈 1 l 〉 〈 1 , N + 2 〉〈 N + 2 , l 〉 〈 li 〉 〈 l, N + 2 〉〈 N + 2 , i 〉 (24) × 〈 1 , N + 2 〉 〈 1 , N + 1 〉〈 N + 1 , N + 2 〉 〈 N + 2 , i 〉 〈 N + 2 , N + 1 〉〈 N + 1 , i 〉 , A = ig N − 2 ( − κ 2 ) 2 〈 1 i 〉 4 〈 12 〉〈 23 ... 〈 N 1 〉 × ∑ l ∈{ g $^{+}$} s$_{N}$$_{+1}$$_{,N}$$_{+2}$s$_{l,N}$$_{+1}$ 〈 1 l 〉 〈 1 , N + 1 〉〈 N + 1 , l 〉 〈 li 〉 〈 l, N + 1 〉〈 N + 1 , i 〉 (23) × 〈 1 , N + 1 〉 〈 1 , N + 2 〉〈 N + 2 , N + 1 〉 〈 N + 1 , i 〉 〈 N + 1 , N + 2 〉〈 N + 2 , i 〉 ,