The same five letters, in the same, consecutive order, can be added to the words below. What are the letters and what are the new words?

1. PIT
2. BUN
3. TEA
4. HIT
5. STAR

Answers:

 The letters are CHING:

1. PITCHING
2. BUNCHING
3. TEACHING
4. HITCHING
5. STARCHING

Credit:
LA Times Crossword
June 19, 2016
Jeffrey Wechsler
I CHING