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

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

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