-up a-a a-b a-c a-t aaa aab aac aae aak aap aat aau ab- aba abb abc abe abk abp abt abu ac- aca acb acc ace ack acp act acu aea aeb aec aee aek aep aet aeu aka akb akc ake akk akp aku ap- apa apb apc ape apk app apt apu at- ata atb atc ate atp att atu au- aua aub auc aue auk aup aut b-p b-u baa bab bac bae bak bap bat bau bba bbb bbc bbe bbk bbp bbt bbu bca bcb bcc bce bck bcp bct bcu be- bea beb bec bee bek bep bet beu bka bkb bkc bke bkk bkp bkt bpa bpb bpc bpe bpp bpt bpu bta btb btc bte btk btp btt btu bua bub buc bue buk bup but buu c-- caa cab cac cae cak cap cat cau cba cbb cbc cbe cbk cbp cbt cbu cca ccb ccc cce cck ccp cct ccu ce- cea ceb cec cee cek cep cet ceu cka ckb ckc ckt cpa cpb cpc cpe cpk cpp cpt cpu cta ctb ctc cte ctk ctp ctt ctu cua cub cuc cue cuk cup cut cuu eaa eab eac eae eak eap eat eau eba ebb ebc ebe ebk ebp ebt ebu ec- eca ecb ecc ece eck ect ecu eea eeb eec eee eek eep eet eka ekb ekc eke ekp ekt eku ep- epa epb epc epe epp ept epu eta etb etc ete etk etp ett etu eu- eua eub euc eue eup eut k-t ka- kaa kab kac kae kak kap kat kau kba kbb kbc kbe kbk kbp kbu kca kcb kcc kce kck kcp kct kcu ke- kea keb kec kee kek kep ket kkb kkc kke kkk kkp kkt kku kpa kpc kpe kpk kpp kpt kpu kta ktb ktc kte ktk ktp ktt ktu kub kuc kue kuk kup kut kuu p-p paa pab pac pae pak pap pat pau pba pbb pbc pbe pbk pbp pbt pbu pca pcb pcc pce pck pcp pct pcu pea peb pec pee pek pep pet peu pka pkb pkc pke pkp pkt pku ppa ppb ppc ppe ppk ppp ppt ppu pt- pta ptb ptc pte ptk ptp ptt ptu pua pub puc pue puk pup put puu taa tab tac tae tak tap tat tau tba tbb tbc tbe tbk tbp tbt tbu tca tcb tcc tce tck tcp tct tcu te- tea teb tec tee tek tep tet teu tka tkb tkc tke tkk tkp tkt tpa tpb tpc tpe tpk tpp tpt tpu tta ttb ttc tte ttk ttp ttt ttu tua tub tuc tue tuk tup tut tuu ua- uaa uab uac uae uak uap uat uau uba ubb ubc ube ubk ubp ubt ubu uca ucb ucc uce uck ucp uct ucu uea ueb uec uee uep uet uka ukb ukc uke ukk ukp uku up- upa upb upc upe upk upp upt upu uta utb utc ute utk utp utt utu uua uuc uue uut uuu