flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1 
flg == 1 => both index sets are same
i =  0,flg = 1 
i =  1,flg = 1 
i =  2,flg = 1 
i =  3,flg = 1 
i =  4,flg = 1 
i =  5,flg = 1 
i =  6,flg = 1 
i =  7,flg = 1 
i =  8,flg = 1 
i =  9,flg = 1 
i =  10,flg = 1 
i =  11,flg = 1 
i =  12,flg = 1 
i =  13,flg = 1 
i =  14,flg = 1 
i =  15,flg = 1