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

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

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