foundations: <up to 4 cards of different suits>

cascade: <some cards>
cascade: <some cards>
cascade: <some cards>
cascade: <some cards>
cascade: <some cards>
cascade: <some cards>
cascade: <some cards>
cascade: <some cards>

freecells: <up to 4 cards>

Cards: AC, 2C, 3C, 4C, 5C, 6C, 7C, 8C, 9C, TC, JC, QC, KC,
       AS, 2S, ...
       AH, 2H, ...
       AD, 2D, ...

The leftmost card in each line is on the bottom of the respective stack.
For example, in the cascade "6S QS 5D" only 5D can be moved.
