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

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

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