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

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

*GRAMMAR*
zup -> YELLOW 
 dax -> RED 
 lug -> PURPLE 
 wif -> GREEN 
 x1 fep u1 -> [x1] [u1] [x1] 
 x1 kiki x2 -> [x2] [x2] [x1] 
 u1 tufa -> [u1] [u1] [u1] 
 u1 x1 -> [u1] [x1] 
 