-up a-a a-b a-c aaa aab aac aak aao aap aau aay ab- aba abb abc abk abo abp abu aby ac- aca acb acc ack aco acp acu acy aka akb akc akk ako akp aku aoa aob aoc aok aoo aop aou ap- apa apb apc apk apo app apu apy au- aua aub auc auk auo aup ay- aya ayc ayk ayo ayp ayu b-p b-u baa bab bac bak bao bap bau bay bba bbb bbc bbk bbo bbp bbu bby bca bcb bcc bck bco bcp bcu bcy bka bkb bkc bkk bko bkp boa bob boc bok boo bop bou boy bpa bpb bpc bpo bpp bpu bpy bua bub buc buk buo bup buu buy by- bya byc byk byo byp byu c-- caa cab cac cak cao cap cau cay cba cbb cbc cbk cbo cbp cbu cby cca ccb ccc cck cco ccp ccu cka ckb ckc cko cky co- coa cob coc cok coo cop cou coy cpa cpb cpc cpk cpo cpp cpu cua cub cuc cuk cuo cup cuu cuy cya cyb cyc cyk cyo cyp ka- kaa kab kac kak kao kap kau kay kba kbb kbc kbk kbo kbp kbu kca kcb kcc kck kcp kcu kkb kkc kkk kkp kku kky koa kob koc kok koo kop kou koy kpa kpc kpk kpo kpp kpu kub kuc kuk kup kuu kuy kya kyc kyo kyp kyu oaa oab oac oak oao oap oau ob- oba obb obc obk obo obp obu oby oc- oca ocb occ ock oco ocp ocu oka okb okc okk oko okp oku oo- ooa oob ooc ook ooo oop op- opa opb opc opk opo opp opy ou- oua ouc ouk ouo oup oya oyo p-p paa pab pac pak pao pap pau pay pba pbb pbc pbk pbo pbp pbu pby pca pcb pcc pck pco pcp pcu pka pkb pkc pko pkp pku pky poa pob poc pok poo pop pou poy ppa ppb ppc ppk ppo ppp ppu pua pub puc puk pup puu puy py- pya pyb pyc pyk pyo pyu ua- uaa uab uac uak uao uap uau uay uba ubb ubc ubk ubo ubp ubu uby uca ucb ucc uck uco ucp ucu uka ukb ukc ukk ukp uku uoa uob uoc uok uoo uop up- upa upb upc upk upo upp upu uua uuc uuu uyc uyo uyu yaa yab yac yak yao yap yau yay ybc ybp yby yca ycc yco ycp ycu ycy yka ykk yob yoc yok yoo yop you yoy ypa ypo ypu yua yuk yuo yup yuu yuy yyb yyc yyu yyy