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

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

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