<synset id="r00153261" type="r">
<lex_filenum>02<lex_filenum/>
<word lex_id="0">at a time<word/>
<word lex_id="3">at once<word/>
<word lex_id="0">at one time<word/>
<def>simultaneously<def/>
<example>he took three cookies at a time<example/>
<synset/>