bu3se cu3se9 du3s eu3se fu3se9

0k4se9 1k4s 2k4se 3k4se9 4k4s

pb5s qb5se rb5se9 sb5s tb5se

e25se f25se9 g25s h25se i25se9

3s6se9 4s6s 5s6se 6s6se9 7s6s