*SUPPORT*
IN: zup OUT: GREEN
IN: dax tufa zup OUT: BLUE GREEN
IN: zup tufa fep wif dax OUT: GREEN RED BLUE
IN: zup lug tufa lug OUT: GREEN PINK PINK
IN: zup kiki OUT: GREEN GREEN GREEN
IN: dax tufa lug OUT: BLUE PINK
IN: zup tufa fep kiki OUT: GREEN RED GREEN RED GREEN RED
IN: lug kiki OUT: PINK PINK PINK
IN: zup lug fep tufa fep wif dax OUT: GREEN PINK RED RED BLUE
IN: fep dax tufa zup wif zup OUT: RED BLUE GREEN GREEN
IN: dax tufa fep kiki OUT: BLUE RED BLUE RED BLUE RED
IN: zup tufa fep OUT: GREEN RED
IN: fep OUT: RED
IN: fep kiki OUT: RED RED RED

*QUERY*
IN: dax wif dax OUT: BLUE BLUE
IN: zup tufa zup OUT: GREEN GREEN
IN: lug fep dax OUT: PINK RED BLUE
IN: dax tufa fep OUT: BLUE RED
IN: lug wif lug OUT: PINK PINK
IN: fep tufa fep OUT: RED RED
IN: fep fep tufa zup OUT: RED RED GREEN
IN: dax fep fep wif zup wif zup OUT: BLUE RED RED GREEN GREEN
IN: dax OUT: BLUE
IN: fep zup wif lug OUT: RED GREEN PINK

*GRAMMAR*
zup -> GREEN 
 dax -> BLUE 
 lug -> PINK 
 fep -> RED 
 x1 kiki -> [x1] [x1] [x1] 
 u1 tufa u2 -> [u1] [u2] 
 x1 wif u1 -> [x1] [u1] 
 u1 x1 -> [u1] [x1] 
 