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

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

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