Knock KnockWho's there?Rena!Rena who?Rena this bell doesn't do any good!Knock KnockWho's there?Rene!Rene who?Rene the marathon!Knock KnockWho's there?Rhoda!Rhoda who?Row, Row, Rhoda boat...!Knock KnockWho's there?Ringo!Ringo who?Ringo round the roses!Knock KnockWho's there?Rita!Rita who?Rita novel!