<block startline="1">
  <lasgn startline="1">
    <Symbol>i</Symbol>
    <lit startline="1">
      <Fixnum>0</Fixnum>
    </lit>
  </lasgn>
  <if startline="2">
    <call startline="2">
      <lvar startline="2">
        <Symbol>i</Symbol>
      </lvar>
      <Symbol>==</Symbol>
      <lit startline="2">
        <Fixnum>0</Fixnum>
      </lit>
    </call>
    <call startline="3">
      <nil />
      <Symbol>p</Symbol>
      <lvar startline="3">
        <Symbol>i</Symbol>
      </lvar>
    </call>
    <nil />
  </if>
</block>