According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 32 words with the pattern ----S-T. That is, seven letter words with 5th letter S and 7th letter T. In alphabetical order, they are:
aerosat
attaskt
babysat
babysit
backset
boneset
brasset
chipset
cresset
deposit
exposit
filmset
handset
hardset
haroset
headset
knesset
lockset
mindset
moonset
nailset
overset
reposit
revisit
seamset
siroset
toolset
transit
twinset
typeset
whatsit
wheesht
That's trouble.
Some seven letter words with the configuration "PR--O-N: are:prenoonpronoun
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ----I-Z. That is, seven letter words with 5th letter I and 7th letter Z. In alphabetical order, they are: kibbitz
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern -AA-I--. That is, seven letter words with 2nd letter A and 3rd letter A and 5th letter I. In alphabetical order, they are: baalism
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern ---IAI-. That is, seven letter words with 4th letter I and 5th letter A and 6th letter I. In alphabetical order, they are: antiair
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern --A-AA-. That is, seven letter words with 3rd letter A and 5th letter A and 6th letter A. In alphabetical order, they are: ujamaas
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern I---A-A. That is, seven letter words with 1st letter I and 5th letter A and 7th letter A. In alphabetical order, they are: ikebana intrada
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern --A-I-I. That is, seven letter words with 3rd letter A and 5th letter I and 7th letter I. In alphabetical order, they are: clarini gradini
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern ----Z-I. That is, seven letter words with 5th letter Z and 7th letter I. In alphabetical order, they are: jacuzzi palazzi
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern ---IJ--. That is, seven letter words with 4th letter I and 5th letter J. In alphabetical order, they are: antijam harijan
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 1 words with the pattern I---IF-. That is, seven letter words with 1st letter I and 5th letter I and 6th letter F. In alphabetical order, they are: iconify
According to SOWPODS (the combination of Scrabble dictionaries used around the world) there are 2 words with the pattern IA--I--. That is, seven letter words with 1st letter I and 2nd letter A and 5th letter I. In alphabetical order, they are: iambics iambist