What value should come in place of the question marks ( ? ) in the series given below? 128, 61, Y, 64, 63, S, 32, 65, N, 16, 67, J, 8, 69, G, ?, ?, ?

Select the letter-cluster that can replace the question mark (?) in the following series: QZR, NYO, KWL, ?, EPF

Which of the given letter-number clusters will replace the question mark (?) in the following series to make it logically complete? USO 48 NLH 39 GEA 30 ZXT 21 ?