Classic duplicate hand with all different contracts and results.

South has a decision whether to open or to pass? 11HCPs and balanced suggests a pass.

West can make life difficult for the opposition by bidding a weak 2♦ (or if using Benji 3♦)

North with a 5 card major will overcall 2♥ 

East with their own 9HCPs and some support for partner could compete with 2♠  South has a difficult decision whether to bid 3♥  or 4♥ . With the 2♦ bid, K♦ will go down in value. Partner is likely to be short in ♦ s. North probably cannot raise 3♥  to 4♥ . Difficult call, though here 4♥ makes.