. "b" . . "mimo\u0159\u00E1dn\u00E9 zv\u00FD\u0161en\u00ED doby trv\u00E1n\u00ED n\u00E1v\u0161t\u011Bv b\u011Bhem jednoho kalend\u00E1\u0159n\u00EDho m\u011Bs\u00EDce a\u017E na 8 hodin," . . "63/b" . .