Match row that contains text text string; list associated values from pivot table

Hi everyone,

Please refer to the attached workbook for reference.

I am looking for a function in Sheet1, Column E that will search for the value of Sheet1, Column A within Sheet2, Column A. When a match is found, the function should look across Sheet2, Columns B - V for values of 1. When such values are found, the function should return the associated value from Sheet2, Row 2. There may be multiple values of 1, and as such, the function should separate values with a comma.

I appreciate your help!

Thanks and best regards,
ACurtis802