Letter: Multiple twins OK

Sir: The correspondence on what to call multi-town twinning has missed a fundamental point. To be triplets, quadruplets or more, there must be a relationship between all the parties. So, town A is twinned with towns B and C simultaneously. But if towns B and C do not have any relationship at all, then there cannot be anything more than two separate twinning arrangements, involving A and B and A and C. Therefore, the term 'twinned with' is correct, even when the arrangement is multi-faceted.

Yours faithfully,

PAUL PICKUP

Runcorn, Cheshire