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

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

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