Legal forsing transfers (Red 2 label, WBF)
Not allowed for amateurs (level 2, EBU).

Let l=summ of two longest colors.
Add l-8 points (subtract a point with 4-3-3-3).

Opening bid at the one level with 7- HCP is forbidden by WBF. 
In such case open with allowed bid.

Openings:

pass: (10-11 any 5-3-3-3) or (8-9 points, 5- any) or (7- points)
1C[H]: (10+, 4-4-x-x, y-4-x-4) or (16+, 3-5-3-3)
1D[S]: (10+, 4-x-4-x, y-4-4-x) or (16+, 3-3-5-3)
1H[N]: (10+, 4-x-x-4, y-x-4-4) or (16+, 3-3-3-5)
1S[N]: (10+, 6-y-y-y) or (16+, 5-3-3-3)
1N[C]: 12-15, any 5-3-3-3
2C[H]: 8+, 6+ D, y-6-y-y
2D[S]: 8+, 6+ H, y-y-6-y
2H[N]: 8+, 6+ S, y-y-y-6
2S[N]: 8+, 0-4-4-4
2N[D]: L-x-x-x
3C[H]: x-L-x-x