*SUPPORT*
IN: wif fep dax OUT: GREEN PURPLE PURPLE PURPLE
IN: gazzer lug fep gazzer OUT: PURPLE YELLOW YELLOW PURPLE YELLOW
IN: zup OUT: RED
IN: gazzer dax lug zup tufa fep OUT: PURPLE RED YELLOW YELLOW YELLOW PURPLE RED
IN: wif OUT: GREEN
IN: gazzer OUT: YELLOW
IN: zup tufa fep OUT: PURPLE RED
IN: gazzer tufa zup OUT: RED YELLOW
IN: wif dax OUT: GREEN GREEN GREEN
IN: gazzer dax lug zup tufa gazzer OUT: YELLOW RED YELLOW YELLOW YELLOW YELLOW RED
IN: wif lug wif wif tufa fep OUT: GREEN PURPLE GREEN GREEN GREEN PURPLE GREEN
IN: fep OUT: PURPLE
IN: wif tufa zup OUT: RED GREEN
IN: wif fep OUT: GREEN PURPLE

*QUERY*
IN: gazzer dax OUT: YELLOW YELLOW YELLOW
IN: zup dax lug fep OUT: PURPLE RED RED RED PURPLE
IN: gazzer tufa wif OUT: GREEN YELLOW
IN: zup tufa wif OUT: GREEN RED
IN: fep dax OUT: PURPLE PURPLE PURPLE
IN: fep tufa wif OUT: GREEN PURPLE
IN: gazzer zup tufa fep OUT: YELLOW PURPLE RED
IN: gazzer dax lug fep tufa fep OUT: PURPLE PURPLE YELLOW YELLOW YELLOW PURPLE PURPLE
IN: wif wif tufa fep OUT: GREEN PURPLE GREEN
IN: fep fep zup tufa fep OUT: PURPLE PURPLE PURPLE RED

*GRAMMAR*
fep -> PURPLE 
 gazzer -> YELLOW 
 wif -> GREEN 
 zup -> RED 
 u1 dax -> [u1] [u1] [u1] 
 x1 lug x2 -> [x2] [x1] [x2] 
 u1 tufa u2 -> [u2] [u1] 
 u1 x1 -> [u1] [x1] 
 