-up a-a a-b aaa aab aak aao aap aau aay ab- aba abb abk abo abp abu aby aka akb akk ako akp aku aoa aob aok aoo aop aou ap- apa apb apk apo app apu apy au- aua aub auk auo aup ay- aya ayk ayo ayp ayu b-p b-u baa bab bak bao bap bau bay bba bbb bbk bbo bbp bbu bby bka bkb bkk bko bkp boa bob bok boo bop bou boy bpa bpb bpo bpp bpu bpy bua bub buk buo bup buu buy by- bya byk byo byp byu ka- kaa kab kak kao kap kau kay kba kbb kbk kbo kbp kbu kkb kkk kkp kku kky koa kob kok koo kop kou koy kpa kpk kpo kpp kpu kub kuk kup kuu kuy kya kyo kyp kyu oaa oab oak oao oap oau ob- oba obb obk obo obp obu oby oka okb okk oko okp oku oo- ooa oob ook ooo oop op- opa opb opk opo opp opy ou- oua ouk ouo oup oya oyo p-p paa pab pak pao pap pau pay pba pbb pbk pbo pbp pbu pby pka pkb pko pkp pku pky poa pob pok poo pop pou poy ppa ppb ppk ppo ppp ppu pua pub puk pup puu puy py- pya pyb pyk pyo pyu ua- uaa uab uak uao uap uau uay uba ubb ubk ubo ubp ubu uby uka ukb ukk ukp uku uoa uob uok uoo uop up- upa upb upk upo upp upu uua uuu uyo uyu yaa yab yak yao yap yau yay ybp yby yka ykk yob yok yoo yop you yoy ypa ypo ypu yua yuk yuo yup yuu yuy yyb yyu yyy