Hidden Label: "C" Subscript, 8 , Baseline equals left parenthesis, "a" , left parenthesis, "a" Subscript, "d" "i" "a" "g" "o" "n" "a" "l" "l" "e" "f" "t" , Baseline , right parenthesis "a" Subscript, 1 , Baseline , right parenthesisC8=a,adiagonallefta1