------------------------------------------
{subsActivityBeforeActivity(a24,a24,12), subsActivityBeforeActivity(a24,a24,41)}

{}

{compObjWrittenByActivityBeforeActivity(x15,a4,a21,41)}

{compObjWrittenByActivityBeforeActivity(x6,a21,a4,10)}

{compObjWrittenByActivityBeforeActivity(x15,a24,a4,42), compObjWrittenByActivityBeforeActivity(x15,a24,a21,12)}