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

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

*GRAMMAR*
zup -> YELLOW 
 wif -> RED 
 tufa -> GREEN 
 kiki -> BLUE 
 u1 blicket u2 -> [u2] [u1] 
 x1 lug x2 -> [x2] [x1] 
 x1 fep -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 