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

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

*GRAMMAR*
fep -> RED 
 wif -> BLUE 
 lug -> GREEN 
 kiki -> YELLOW 
 x1 tufa u1 -> [u1] [x1] 
 x1 zup x2 -> [x2] [x1] [x2] [x1] 
 u1 gazzer u2 -> [u1] [u2] 
 u1 x1 -> [u1] [x1] 
 