1NT-(2C)はBoth Mなので、1NT-(2C)-2MをARTにする。
1NT-(2D/2M)に対してはレーベンソールを用いる。

1NT-(2C)-?
X = power
2D = NAT
2H = Both m INV
2S = Both m FG
2NT = LEB
3m = NAT FG
3M = m55+ SPL
3NT = to play
4C = not use?
4R = TRF to 4M

1NT-(2D)-?
X = power
2M = NAT
2NT = LEB

1NT-(2M)-?
same as 1NT-(2M = NAT)-?

参考レーベンソール after 1NT