quiddity, on 2012-March-23, 17:36, said:
You either misread the auction or misunderstood the 3♠ bid. It does not show a weak notrump.
I think you've misread my post (which is MY fault) I'm not suggesting a wk NT, just eliminating a strong one, so if 4243, he must be 14pts to bid 3S, anything else either opened 1nt or bids 2S. 5422 could be NT strength but didn't open 1NT, so maybe concentrated values not suited to NT or opener never opens 5422's with NT's.