Flowers - Orchid, Plum, Chrysanthemum, and Bamboo.
Dragons - Red, White, and Green. Dragons were symbols of the emperor. They are generally considered evil, but in China some dragons are benevolent.
Winds - the East, West, North, and South winds.
Bams - may represent victory or power.
Craks - the top symbol is "one" thru "nine", the bottom symbol is "10,000".
Dots - date back to the original sailor's game and probably represent money.