43 twelfth 44 calculate 45 harm 46 Electrical 47 invention 48 Did , see 49 with an 50 What announce 51 How , are 52 They found some footprints and a skeleton in a cave .
43 twelfth 44 calculate 45 harm 46 Electronic 47 inventions 48 Did see 49 with an 50 What announce 51 How are 52 They found a skeleton and some footprints in a cave.