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

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

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