The word Pena is misspelled against Penna, a noun meaning "A perfect, or normal, feather."
-->
Penna has double "nn" is mispronounced as "n"
Remember double 'NN' in between the strings pe & a which should not be misspelled with single 'N'
Wrong Spelling:  pe-n-a 
Correct Spelling:  pe-nn-a 
Explore spell check of Penna to spell without errors.