1d = 4 + cards

2sp over 1h is gf as with most 18-19 5-4 1sp is the bid you expect p to bid. you also don't have a strong diamond bid so with a very good hand you must choose from 2c and 1d only.

3h = 1 round force 5+ cards.

4C = cue bid for hearts promises 3 cards in heart first or second control in c.

4nt = kcb. 5c= 1/4

5nt asks for specific kings. 6d = kd no kc.

Now what? if you bid differntly assume west got a marriage preposal and left the table and you have been asked to do your best to finish the board.

Nice day