Use which where who whose when

Use which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose whenUse which where who whose when