Words that have 'r' as the second letter and 'p' as third letter

In Scrabble, what is the best score you can get using words that have 'r' as the second letter and 'p' as third letter?
Using this combination of letters, the best word you ought to play is 'orphize' for a total score of 21 points in Scrabble.

What is the maximum number of words you can create from this combination of letters?
There are 61 words overall.

How many letters are in the longest word on this page?
The longest word found by Dictionarypedia is 'erpetoichthys'.

Is there an example word from this page of word where the second letter is 'r' and third letter is 'p' which could be considered as unusual?
The most weird word from this list is surely 'orphean'. According to the Oxford dictionary, 'orphean' means "Of or pertaining to Orpheus, the mythic poet and musician; as, orphean strains. Cowper.".

What's the most common word for this page?
Rating as the 11768^th most common word, you will want to ensure that you have 'orphan' in your repertoire.