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

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

*GRAMMAR*
tufa -> RED 
 fep -> YELLOW 
 gazzer -> GREEN 
 dax -> PINK 
 u1 wif u2 -> [u2] [u1] [u1] 
 x1 kiki x2 -> [x1] [x2] 
 x1 lug x2 -> [x1] [x2] 
 u1 x1 -> [u1] [x1] 
 