I vs t

I

character

  • The ninth letter of the English alphabet, called i and written in the Latin script. 

pron

  • The speaker or writer, referred to as the grammatical subject, of a sentence. 

  • The speaker or writer, referred to as the grammatical object, of a sentence. 

noun

  • Interstate. 

  • The ego. 

t

character

  • The twentieth letter of the English alphabet, called tee and written in the Latin script. 

How often have the words I and t occurred in a corpus of books? (source: Google Ngram Viewer )