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

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

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