You should not use <survey> / <surveypage> for this. Instead, define your 9 <picture> elements as needed, have a <trial> display them and collect the participant's response:
<trial pictrial>/ stimulusframes = [1=pic1, pic2, pic3, ..., pic9]
/ inputdevice = mouse
/ validresponse = (pic1, pic2, pic3, ..., pic9)
</trial>