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

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

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