*SUPPORT*
IN: zup dax lug OUT: PURPLE YELLOW
IN: wif tufa OUT: GREEN RED
IN: lug dax zup OUT: YELLOW PURPLE
IN: wif zup wif fep zup OUT: GREEN YELLOW GREEN YELLOW
IN: tufa dax wif fep wif OUT: GREEN GREEN RED
IN: wif zup fep tufa OUT: GREEN YELLOW RED
IN: wif OUT: GREEN
IN: wif fep lug OUT: GREEN PURPLE
IN: lug lug dax zup OUT: PURPLE YELLOW PURPLE
IN: tufa OUT: RED
IN: lug lug OUT: PURPLE PURPLE
IN: zup lug OUT: YELLOW PURPLE
IN: lug tufa lug fep tufa OUT: PURPLE RED PURPLE RED
IN: zup OUT: YELLOW

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

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