Words with 'a' at the start and 'lca' at the end

What is the highest scoring word in Scrabble with the above combination ?
As there is only a single word possible, you can only use 'alca' which scores 6 points.

How many words are possible to make using this combination of letters?
From this list of words beginning with 'a' and ending with 'lca', there is only 1 combination which is available.