1N-2D opener generally bids 2H. The only way to super accept H is to bid 2S.

1N 2D 2H 2S=relay forces 2N then:

3C=4441 or 4450 force.

3D=4414 or 4405 force.

3H=5/5/majors invitational.

3S=5/5 majors force.

3NT=5/5 majors but also minor suit stoppers

4C or 4D = fragment (and void in 4^th suit)

1N 2D 2H 2N=natural, opener can bid 3C, 3D to further game try.

1N 2D 2H 3C,3D=natural force does not promise slamish values.

1N 2D 2H 3H=natural invitation

1N 2D 2H 3S=long H forcing. 3N asks singleton responder then shows singletons at 4 level (no void step available)

1N 2D 2H 3N=natural

1N 2D 2H 4C=slam try no shortness, opener bids 4♦ last train

1N 2D 2H 4D=

1N 2D 2H 4H=slam try weaker trump no shortness

1N 2D 2H 4N=quantitative

1N 2D 2S Only heart super accept. Responder bids 2N with heart length. All other responder bids shown hand types of relay above.