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

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

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