-up a-a a-b aaa aab aan aap aau ab- aba abb abn abp abu an- ana anb ann anp anu ap- apa apb apn app apu au- aua aub aun aup b-p b-u baa bab ban bap bau bba bbb bbn bbp bbu bna bnb bnn bnp bnu bpa bpb bpn bpp bpu bua bub bun bup buu naa nab nan nap nau nba nbb nbn nbp nbu nna nnb nnn nnp nnu npa npb npn npp npu nua nub nun nup nuu p-p paa pab pan pap pau pba pbb pbn pbp pbu pn- pna pnb pnn pnp pnu ppa ppb ppn ppp ppu pua pub pun pup puu ua- uaa uab uan uap uau uba ubb ubn ubp ubu un- una unb unn unp unu up- upa upb upn upp upu uua uun uuu