chr1    mm10_knownGene  exon    3205904 3207317 0.000000        -       .       gene_id "uc007aet.1"; transcript_id "uc007aet.1"; 
chr1    mm10_knownGene  exon    3213439 3215632 0.000000        -       .       gene_id "uc007aet.1"; transcript_id "uc007aet.1"; 
chr1    mm10_knownGene  stop_codon      3216022 3216024 0.000000        -       .       gene_id "uc007aeu.1"; transcript_id "uc007aeu.1"; 
chr1    mm10_knownGene  CDS     3216025 3216968 0.000000        -       2       gene_id "uc007aeu.1"; transcript_id "uc007aeu.1";