code: def extract_acked_seqs(bitmap, ssc_seq):
          
          acked_seqs = []
          for idx, val in enumerate(bitmap):
              if int(val) == 1:
                  seq = (ssc_seq + idx) % 4096
                  acked_seqs.append(seq)
          return acked_seqs
docs: extracts acknowledged sequences from bitmap and
          starting sequence number.
          :bitmap: str
          :ssc_seq: int
          :return: int[]
              acknowledged sequence numbers