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

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

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