*SUPPORT*
IN: gazzer gazzer lug tufa tufa blicket tufa OUT: BLUE BLUE BLUE GREEN GREEN
IN: gazzer fep OUT: GREEN GREEN
IN: wif OUT: YELLOW
IN: gazzer blicket tufa fep OUT: BLUE GREEN BLUE GREEN
IN: zup lug zup wif blicket zup OUT: RED RED YELLOW RED
IN: zup wif OUT: RED YELLOW
IN: zup lug wif lug gazzer OUT: GREEN YELLOW RED
IN: tufa blicket wif OUT: YELLOW BLUE
IN: tufa wif gazzer blicket gazzer fep OUT: BLUE YELLOW GREEN GREEN BLUE YELLOW GREEN GREEN
IN: wif zup OUT: YELLOW RED
IN: gazzer OUT: GREEN
IN: gazzer blicket tufa OUT: BLUE GREEN
IN: gazzer tufa fep OUT: GREEN BLUE GREEN BLUE
IN: wif wif lug zup blicket gazzer lug gazzer OUT: GREEN GREEN RED YELLOW YELLOW

*QUERY*
IN: zup OUT: RED
IN: gazzer wif OUT: GREEN YELLOW
IN: tufa blicket tufa fep OUT: BLUE BLUE BLUE BLUE
IN: zup blicket tufa OUT: BLUE RED
IN: tufa fep fep fep OUT: BLUE BLUE BLUE BLUE BLUE BLUE BLUE BLUE
IN: wif wif blicket tufa OUT: YELLOW BLUE YELLOW
IN: tufa OUT: BLUE
IN: wif blicket zup OUT: RED YELLOW
IN: tufa blicket gazzer OUT: GREEN BLUE
IN: zup blicket gazzer fep OUT: GREEN RED GREEN RED

*GRAMMAR*
wif -> YELLOW 
 zup -> RED 
 tufa -> BLUE 
 gazzer -> GREEN 
 x1 lug x2 -> [x2] [x1] 
 u1 blicket u2 -> [u2] [u1] 
 x1 fep -> [x1] [x1] 
 u1 x1 -> [u1] [x1] 
 