Pls help! will give brainlist!

Brianna is using the two spinners shown to play her new board game. She spins the arrow on each spinner once. Brianna uses the first spinner to determine how many spaces to move. She uses the second spinner to determine whether her move from the first spinner will be forward or backward. Find the probability that Brianna will move fewer than four spaces backward. Show or explain your work to justify your answer.