The pattern "___ti_" suggests a 5-letter word with 't' and 'i' in the 3rd and 4th positions. Common words with this pattern include "ratio", "patio", "Latin", "satin", etc. Since common letters like 'a', 'e', 'i', 'o' have been guessed already, 's' is a frequent letter in English that could appear at the beginning (like in "satin") or at the end position. It's a high-frequency letter that hasn't been tried yet.