According to SOWPODS (the combination of Scrabble dictionaries
used around the world) there are 17 words with the pattern
--STUR--. That is, eight letter words with 3rd letter S and 4th
letter T and 5th letter U and 6th letter R. In alphabetical order,
they are:
disturbs
gestural
gestured
gesturer
gestures
pastural
pastured
pasturer
pastures
postural
postured
posturer
postures
vestural
vestured
vesturer
vestures