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

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

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