Habit is cleaner, but if "first letter" is considered the first letter removed from within the word, and not the "first letter" positionally, Tibia still works.

TIBIA TBIA - first letter removed "I". "A BIT" remains. TBI - Second letter removed "A". "BIT" remains. TI - Third letter removed "B". "IT" remains.

Everyone, including a newborn baby has a tibia, but not necessarily a habit, yet.