I imagine that the parent considered that one could play a longer word that happened to make shorter words just not _only_ play a two letter word; so parallel words would be acceptable as would things like in-fills that only took one letter but caused 2 words to be formed.
Perhaps a better, succinct, rule that tackles the same problem would be "a minimum of two tiles must be placed".
I imagine that the parent considered that one could play a longer word that happened to make shorter words just not _only_ play a two letter word; so parallel words would be acceptable as would things like in-fills that only took one letter but caused 2 words to be formed.
Perhaps a better, succinct, rule that tackles the same problem would be "a minimum of two tiles must be placed".