Befalen or Befallen: How To spell?

The word Befalen is misspelled against Befallen, which is past perfect of "Befall"

Befallen has double "ll" is mispronounced as "l"
Remember double 'LL' in between the strings befa & en which should not be misspelled with single 'L'
Wrong Spelling:  befa-l-en 
Correct Spelling:  befa-ll-en 
Explore spell check of Befallen to spell without errors.