please explain the steps

Unit 3: Probability Assignment Booklet 3 15. Patterns and Games: Continue the Pattern The following are the first steps in a pattern of A's and B's. Step 3 Step 4 Step 1 Step 2 P A B A B P B B A P P B B B B P P B B A P A B A B A P A A A A A A A A A A A A A Complete the pattern for Step 5. (2 marks) Step 5