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where A , B and C are 

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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 

<img src='content_image/318691.jpg'>

