Opening 1� = 12-14 balanced; 15-17 5+�; 12-17 3-suit with short �; 18+ anything
        Note: 5-5 shape with could be opened 1M up to 19 points

Responses after 1�
  1�    = 0-6 anything; 8-11 one or both minors; 16+ balanced without 4M
  1�/�  = 7+  4+card suit, F
  1NT   = 8-11 balanced without 4M
  2�/�  = GF, 5+ card suit
  2�/�  = strong jump
  2NT   = natural, invitation to 3NT
  3���� = 9-11 7=card suit with two of A,K,Q

After 1� - 1�
  1�/�    = 12-17 3card possible, non-forcing, could be sometimes 18 with bad 5card suit
  1NT     = 18-20 balanced, then like after 1NT opening
  2�      = 15+  5+�
  2�      = 22+ anything, then 2� = second negat
  2��/3�� = 18-22 5+card suit, non-forcing
  3��     = One suit hand up to 3 losers

Special sequences

1� - 1M - 2� = 18+ 3+card fit, ASK
         then  2�  = 7-9 4=card suit of response,  then 2�  = next ask
               2�  = 7-9 5+card suit of response,  then 2NT = next ask
               2NT = 10+ 4=card suit of response,  then 3�  = next ask
               New suit on 3rd level = 10+ 5+card suit of response and side 4+card
               3M (not new suit) = 10+  6+card suit
               3NT = 10+ 5-3-3-2