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

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

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