-up a-a a-b aaa aab aae aao aap aau ab- aba abb abe abo abp abu aea aeb aee aeo aep aeu aoa aob aoe aoo aop aou ap- apa apb ape apo app apu au- aua aub aue auo aup b-p b-u baa bab bae bao bap bau bba bbb bbe bbo bbp bbu be- bea beb bee beo bep beu boa bob boe boo bop bou bpa bpb bpe bpo bpp bpu bua bub bue buo bup buu eaa eab eae eao eap eau eba ebb ebe ebo ebp ebu eea eeb eee eeo eep eo- eoa eob eoe eoo eop eou ep- epa epb epe epo epp epu eu- eua eub eue eup oaa oab oae oao oap oau ob- oba obb obe obo obp obu oea oeb oee oeo oep oo- ooa oob ooo oop op- opa opb ope opo opp ou- oua oue ouo oup p-p paa pab pae pao pap pau pba pbb pbe pbo pbp pbu pea peb pee peo pep peu poa pob poe poo pop pou ppa ppb ppe ppo ppp ppu pua pub pue pup puu ua- uaa uab uae uao uap uau uba ubb ube ubo ubp ubu uea ueb uee uep uoa uob uoe uoo uop up- upa upb upe upo upp upu uua uue uuu