Checking text in cells against a list of possible words

I'm trying to make a game where from a choice of 16 words the contestant has to choose four of those words that, when another word is placed before or after each word it makes a phrase.

e.g From this list of 16 words
albert
bell
bottle
chariot
fidler
hermit
lambeth
london
moon
print
shore
spider
stocking
tower
velvet
walton

choosing bell, bottle, print, stocking can all have BLUE placed before them to make bluebottle, blueprint etc. That would be the correct answer.
Choosing their four words would be from a drop down list of all 16 words, separate cell for each list options/chosen answer.
bell bottle print stocking CORRECT

There would be 4 rows in total for 4 different answers to be made from the 16 words on offer. I have tried everything to get it to work in the 5th cell but it's driving me mad. Can anyone help please ?

connect.xls

Thanks for the help so far. File attached. The rule is "Choose 4 words which can have the same word placed before them"