-Has a double letter, in other words, a letter, seen more than once in a row, and
-Starts with the double letter from the previous word.
-If the previous word has multiple cases of a double letter, the next one can start with either of them. For instance, if the last move is the word Successfully, the next one can start with C, S or L.
Example
-All
-Loop
-Opposing
-Piggy
-Greek
Let us start
Tree
