2♣ - GF or ♦W2 

2♣ shows:

- Balanced, 22+

- M one suiters with max 3-LT or m one suiters with max 4-LT, containing at least 6 CT, min 1 Ace

or 6 card ♦, weak

2♦        =    waiting, OP with ♦W2 passes        ➲

all other bids assume ♦W2 opening

2♥♠3♣   =    F1, 5+♥♠♣    ➤    3♦ and below (except 2NT) are natural and show ♦W2 opening. 

                                                2NT shows 22+ balanced

                                                3♥ and above are natural and show strong 2♣ opening.

3♦    =    preemptive

2NT      =    asking    ➲