1<species xxx = "sp">
1 <sequence xx = "" xxxxx = "xxxxxxx">
1  <genome_xxxxxx = "CDS" xxxxxx = "" xxxxxxx = "" xxxxxxxxx = " ">
1   <gene xx = "xxxxxxxxxxx" xxxxxx = "x">
1    <gene_seq xxxxxxx = ""  xxxxxx =  ""   xxxxxxx = "2"  xxxxxxxxx = ""  xxxxx = "5999"  xxxx = "6318"  xxxxxxx = ""  xxxxxxx = ""  xxxxxx = "F">
1    </gene_seq>
1   </gene>
1  </genome_feature>
1 </sequence>
1</species>
2<species xxx = "sp">
2 <sequence xx = "" xxxxx = "xxxxxxx">
2  <genome_xxxxxx = "CDS" xxxxxx = "" xxxxxxx = "" xxxxxxxxx = " ">
2   <gene xx = "xxxxxxxxxxx" xxxxxx = "x">
2    <gene_seq xxxxxxx = ""  xxxxxx =  ""   xxxxxxx = "2"  xxxxxxxxx = ""  xxxxx = "5999"  xxxx = "6318"  xxxxxxx = ""  xxxxxxx = ""  xxxxxx = "F">
2    </gene_seq>
2   </gene>
2  </genome_feature>
2 </sequence>
2</species>

etc.........................................

(xxxxxxs substitute real words)