lDoesSuffixExist evaluates to .F. for this. It must be something simple, but I can't see it. I was expecting .T. as the result.

tcName = "Thurston Howell III"
lDoesSuffixExist = INLIST(UPPER(tcName),"PHD","II","III","IV","V","JR","SR","ESQ","CPA","CEA","DD","MD","JD")