*SUPPORT*
IN: zup dax OUT: GREEN GREEN
IN: lug dax OUT: PINK PINK
IN: tufa lug dax OUT: YELLOW PINK PINK
IN: zup zup OUT: GREEN GREEN
IN: gazzer dax OUT: BLUE BLUE
IN: zup wif tufa OUT: YELLOW GREEN
IN: tufa lug lug dax OUT: YELLOW PINK PINK PINK
IN: gazzer OUT: BLUE
IN: lug wif zup OUT: GREEN PINK
IN: gazzer zup wif tufa OUT: BLUE YELLOW GREEN
IN: tufa wif gazzer OUT: BLUE YELLOW
IN: gazzer wif zup OUT: GREEN BLUE
IN: tufa gazzer OUT: YELLOW BLUE
IN: lug zup lug lug gazzer dax OUT: PINK GREEN PINK PINK BLUE BLUE

*QUERY*
IN: gazzer fep OUT: BLUE BLUE BLUE BLUE
IN: zup fep OUT: GREEN GREEN GREEN GREEN
IN: tufa wif lug OUT: PINK YELLOW
IN: tufa wif zup OUT: GREEN YELLOW
IN: lug wif tufa OUT: YELLOW PINK
IN: zup OUT: GREEN
IN: lug OUT: PINK
IN: zup zup dax OUT: GREEN GREEN GREEN
IN: tufa lug wif lug OUT: YELLOW PINK PINK
IN: tufa gazzer fep OUT: YELLOW BLUE YELLOW BLUE YELLOW BLUE YELLOW BLUE

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