What letter was added during the middle ages to replace the letter "i" when it was used as a consonant? latin

Read this sentence. although the idea was foreign to me, i still thought i would give it a try.

Ecoul il mana catre pestera purpurie dintre dealuri,trezind din vise pastratori adormiti. pluti apoi printre trestiile raului,si trestiile ii dusera solia catre apele marii." (oscar wilde,printul fericit) •analizeaza atributele adjectivale si substantivale si enuntul urmator,completand tabelul dat: |tipuri de atribut| |partea de vorbire| |cazul| multumesc,anticipat.

Depending on where you are in the world, hurricanes may also be called