-up a-a a-b a-c aaa aab aac aae aao aap aas aau ab- aba abb abc abe abo abp abs abu ac- aca acb acc ace aco acp acs acu aea aeb aec aee aeo aep aes aeu aoa aob aoc aoe aoo aop aos aou ap- apa apb apc ape apo app aps apu as- asa asb asc ase aso asp ass asu au- aua aub auc aue auo aup aus b-p b-u baa bab bac bae bao bap bas bau bba bbb bbc bbe bbo bbp bbs bbu bca bcb bcc bce bco bcp bcs bcu be- bea beb bec bee beo bep bes beu boa bob boc boe boo bop bos bou bpa bpb bpc bpe bpo bpp bps bpu bsa bsb bsc bse bso bsp bss bsu bua bub buc bue buo bup bus buu c-- caa cab cac cae cao cap cas cau cba cbb cbc cbe cbo cbp cbs cbu cca ccb ccc cce cco ccp ccs ccu ce- cea ceb cec cee ceo cep ces ceu co- coa cob coc coe coo cop cos cou cpa cpb cpc cpe cpo cpp cps cpu csa csb csc cse cso csp css csu cua cub cuc cue cuo cup cus cuu eaa eab eac eae eao eap eas eau eba ebb ebc ebe ebo ebp ebs ebu ec- eca ecb ecc ece eco ecs ecu eea eeb eec eee eeo eep ees eo- eoa eob eoc eoe eoo eop eos eou ep- epa epb epc epe epo epp eps epu es- esa esb esc ese eso esp ess esu eu- eua eub euc eue eup eus oaa oab oac oae oao oap oas oau ob- oba obb obc obe obo obp obs obu oc- oca ocb occ oco ocp ocs ocu oea oeb oec oee oeo oep oes oo- ooa oob ooc ooo oop oos op- opa opb opc ope opo opp ops os- osa osb osc ose oso osp oss osu ou- oua ouc oue ouo oup ous p-p paa pab pac pae pao pap pas pau pba pbb pbc pbe pbo pbp pbs pbu pca pcb pcc pce pco pcp pcs pcu pea peb pec pee peo pep pes peu poa pob poc poe poo pop pos pou ppa ppb ppc ppe ppo ppp pps ppu ps- psa psb psc pse pso psp pss psu pua pub puc pue pup pus puu saa sab sac sae sao sap sas sau sba sbb sbc sbe sbo sbp sbs sbu sca scb scc sce sco scp scs scu se- sea seb sec see seo sep ses seu soa sob soc soe soo sop sos sou spa spb spc spe spo spp sps spu ss- ssa ssb ssc sse sso ssp sss ssu sua sub suc sue suo sup sus suu ua- uaa uab uac uae uao uap uas uau uba ubb ubc ube ubo ubp ubs ubu uca ucb ucc uce uco ucp ucs ucu uea ueb uec uee uep ues uoa uob uoc uoe uoo uop uos up- upa upb upc upe upo upp ups upu usa usb usc use uso usp uss usu uua uuc uue uus uuu