*SUPPORT*
IN: lug tufa lug OUT: BLUE BLUE BLUE BLUE
IN: dax gazzer tufa gazzer wif gazzer OUT: PURPLE PURPLE YELLOW PURPLE PURPLE PURPLE PURPLE
IN: lug tufa gazzer OUT: BLUE BLUE BLUE PURPLE
IN: fep tufa fep OUT: GREEN GREEN GREEN GREEN
IN: lug wif dax wif dax OUT: YELLOW YELLOW YELLOW YELLOW BLUE
IN: dax OUT: YELLOW
IN: fep tufa fep wif gazzer OUT: PURPLE PURPLE GREEN GREEN GREEN GREEN
IN: gazzer gazzer OUT: PURPLE PURPLE
IN: gazzer tufa dax OUT: PURPLE PURPLE PURPLE YELLOW
IN: dax tufa gazzer OUT: YELLOW YELLOW YELLOW PURPLE
IN: gazzer OUT: PURPLE
IN: fep dax tufa fep OUT: GREEN YELLOW YELLOW YELLOW GREEN
IN: gazzer tufa gazzer OUT: PURPLE PURPLE PURPLE PURPLE
IN: gazzer gazzer gazzer wif gazzer OUT: PURPLE PURPLE PURPLE PURPLE PURPLE

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

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