sells=bread,pumpkin_pie,apple,cookie,cake,shears,wool_white,wool_orange,wool_magenta,wool_lightblue,wool_yellow,wool_limegreen,wool_pink,wool_gray,wool_lightgray,wool_cyan,wool_purple,wool_blue,wool_brown,wool_green,wool_red,wool_black,arrow,bow,flint,emerald

buys=wheat,potato,carrot,pumpkin,melon,wool_white,string_minecraft,emerald