input: [Char.] 3 [Pattern b s b s b s b s b] w n w w n n n n n [Char._3] F [Char._6] R [Pattern b s b s b s b s b_7] w n n n n n w w n [Char._9] * [Pattern b s b s b s b s b_10] n w n n w n w n n [Pattern b s b s b s b s b_4] 
output: n n w n w w n n n