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

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

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