f13pb7 e13pb d13p c13pb7 b13pb

qa3pb pa3p oa3pb7 na3pb ma3p

1j2p 0j2pb7 zj2pb yj2p xj2pb7

ct1pb7 bt1pb at1p 9s1pb7 8s1pb

n20pb m20p l20pb7 k20pb j20p