Words that start with 'r' and contain 'rto'

What's the most popular word on this page?
'Repertory' is the most popular word from this list, ranked 68307^th most common word.

How many characters are in the largest word on this list?
There are 13 letters in the word 'reportorially', which makes it the biggest word on this list.

In Scrabble, what's the best score possible from words that start with 'r' and include 'rto'?
From this particular combination, it is possible to make 'roberto' which scores 9 points.

Is there an example of a particular word from this page which could be considered as unique?
By far the most weird word in this list is 'repertory'. The definition of 'repertory' is as follows: "1. A place in which things are disposed in an orderly manner, so that they can be easily found, as the index of a book, a commonplace book, or the like. 2. A treasury; a magazine; a storehouse. 3. Same as Répertoire.". Source Cambridge Dictionary.

How many words is it possible to make using these particular combinations of letters?
From this page of words that start with 'r' and contain 'rto', Dictionarypedia has found 11 entries which can be selected.