You want to have the subquestion text?
{join(if(Q1_SQ001=="Y",Q1_SQ001.question+'<br />',""), if(Q1_SQ002=="Y",Q1_SQ002.question+'<br />',""), if(Q1_SQ003=="Y",Q1_SQ003.question+'<br />',""), if(Q1_SQ004=="Y",Q1_SQ004.question+'<br />',""), if(Q1_SQ005=="Y",Q1_SQ005.question+'<br />',""), if(Q1_SQ006=="Y",Q1_SQ006.question+'<br />',""), if(Q1_SQ007=="Y",Q1_SQ007.question+'<br />',""))}
Joffm