Read the table below regarding "List of places in Pennsylvania: Sa–Si" to answer the given question.

Name of place | Sadlers Corner | Sadsbury Township | Saco | Sacramento | Sagamore | Saginaw | Sabinsville | Sagamore Estates | NAME_1 | Sadsbury Meeting House | Sabula | Saco | Saegersville | Sadsburyville | NAME_2 Junction | Sadsbury Township | Sackville | Safe Harbor | NAME_2 | Saegertown | Saegers | Sadsbury Township | St. Albans | Sagamore
Number of counties | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1
Lower zip code |  |  |  | 17968 | 16250 | 17347 | 16943 |  | 16735 |  | 15801 | 18850 | 18053 | 19369 |  |  |  | 17516 | 17872 | 16433 |  |  | 19073 | 15446
Principal county | Venango County | Lancaster County | Lackawanna County | Schuylkill County | Armstrong County | York County | Tioga County | Pike County | Elk County | Lancaster County | Clearfield County | Bradford County | Lehigh County | Chester County | Northumberland County | Crawford County | Delaware County | Lancaster County | Northumberland County | Crawford County | Lycoming County | Chester County | Delaware County | Fayette County
Upper zip code |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 

Question: how many times is sadsbury township listed? In your entire response, the letter f should appear less than 40.
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