 1 – 2
Forcing for one round; 10 points or more with at least four clubs.1 – 3
Weak; 9 points or less—sometimes much less—with at least five clubs.1 – 2
Weak; 6-9 points with at least 3 hearts (unless Bergen raises are in use, in which case it shows precisely 3 hearts)

1 – 1NT;
2 – 2
Shows a weak hand, 6-9 points, with precisely two spades.