In Competition

1M - (1NT) -

DBL    =    for penalty

2♣     =    3+M,5+oM

2♦      =    3+M, 7+

2M      =    3+M, 4-6

2oM      =    6+oM, NF

2NT    =    4 card M, 10+ HCP, some shortage, invitation

3M    =    4 card M, weak, some shortage