Opening 2 Club: 

4+ clubs and  5+ cards major OR 6+ clubs, 10-14 HCP

2D= asking bid, 0-? HC

               2 in major –   5+ cards

    2S over 2H – natural, inv

                  2NT – inv

                            3C – inv

    3D – forcing, can be short

        opener further describes his hand by bidding shortness or extra cards in already bid suits (whichever is cheaper) or NT

    raise the major – inv

    3H  over 2S = 5+ cards, gforce

     3NT – sign off

                            2 NT – 6+ clubs and max

                                         3C – sign off

                                         3D -  forcing, can be short

                                                opener shows singleton in major or bids 3NT

                                         3H/S 5+ cards forcing

                                        3NT – sign off

                             3C – 6+ clubs and min

                                         3D – forcing, can be short

                                                opener shows singleton in major or bids 3NT

                                         3H/S 5+ cards forcing

                                          3NT – sign off

                            3 in major –   6+ cards and max

                2H/2S= 6+ cards, sign off

                2NT= 4-3-3-3 inv

                3C = club fit, forcing

                3D/H/S= 7+ cards, sign off

                3NT= 4-3-3-3  – pass or correct if u have a major