Auto generation of attribute values and content

I have the following code in my xsl file. 

<row font-bold='true' alignment-horizontal='center'>
   <cell defined-name="month1">Jan</cell>
   <cell defined-name="month2">Feb</cell>
   <cell defined-name="month3">Mar</cell>
   <cell defined-name="month4">Q1</cell>
   <cell defined-name="month5>>Apr</cell>
   <cell defined-name="month6">May</cell>
   <cell defined-name="month7">Jun</cell>
   <cell defined-name="month8">Q2</cell>
   <cell defined-name="month9">Jul</cell>
   <cell defined-name="month10">Aug</cell>
   <cell defined-name="month11">Sep</cell>
   <cell defined-name="month12">Q3</cell>
   <cell defined-name="month13">Oct</cell>
   <cell defined-name="month14">Nov</cell>
   <cell defined-name="month15">Dec</cell>
   <cell defined-name="month16">Q4</cell>
   </row>

I would like to do a for loop or whatever possible
ways to auto-geneate the content. Something like
below:

<row font-bold='true' alignment-horizontal='center'>
  <cell define-name=getMonth()>getData()</cell>
</row>

I don't know whether it is possible and how should I
code the getMonth() and getData() method. What should
the syntax like?

Please give me your insight and thank you very much.

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