UTR Library Designer Error

Template 5'-UTR Sequence (25NT) : TTAATTAATCTAGAAGGAGGTTTTT ,     Additional Constraints for designing 5'-UTR sequence (25NT) : NNNNNNNNNNNNNNNNNNNNNNNNN

Protein Coding Sequence (at least N-term 35NT) : ATGACCCGTGAAGTTGTTGTTGTTAGCGGTGTTCG

16s rRNA Sequence : ACCUCCUUA

Desired Expression Range : 4000000.98 ~ 999999.00 ( Desired max expression should be larger than that of min )

Number of expression-level intermediates : 32