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

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

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