-er -up a-a a-b a-t aaa aab aae aan aap aar aat aau ab- aba abb abe abn abp abr abt abu aea aeb aee aen aep aer aet aeu an- ana anb ane ann anp anr ant anu ap- apa apb ape apn app apr apt apu ar- ara arb are arn arp arr art aru at- ata atb ate atn atp atr att atu au- aua aub aue aun aup aur aut b-p b-u baa bab bae ban bap bar bat bau bba bbb bbe bbn bbp bbr bbt bbu be- bea beb bee ben bep ber bet beu bna bnb bne bnn bnp bnr bnt bnu bpa bpb bpe bpn bpp bpr bpt bpu bra brb bre brn brp brr brt bru bta btb bte btn btp btr btt btu bua bub bue bun bup bur but buu eaa eab eae ean eap ear eat eau eba ebb ebe ebn ebp ebr ebt ebu eea eeb eee een eep eer eet en- ena enb ene enn enp enr ent enu ep- epa epb epe epn epp epr ept epu era erb ere ern erp err ert eru eta etb ete etn etp etr ett etu eu- eua eub eue eun eup eur eut naa nab nae nan nap nar nat nau nba nbb nbe nbn nbp nbr nbt nbu ne- nea neb nee nen nep ner net neu nna nnb nne nnn nnp nnt nnu npa npb npe npn npp npr npt npu nra nrb nre nrn nrp nrr nrt nru nta ntb nte ntn ntp ntr ntt ntu nua nub nue nun nup nur nut nuu p-p paa pab pae pan pap par pat pau pba pbb pbe pbn pbp pbr pbt pbu pea peb pee pen pep per pet peu pn- pna pnb pne pnn pnp pnr pnt pnu ppa ppb ppe ppn ppp ppr ppt ppu pra prb pre prn prp prr prt pru pt- pta ptb pte ptn ptp ptr ptt ptu pua pub pue pun pup pur put puu ra- raa rab rae ran rap rar rat rau rba rbb rbe rbn rbp rbr rbt rbu re- rea reb ree ren rep rer ret reu rna rnb rnn rnp rnr rnt rnu rpa rpb rpe rpn rpp rpr rpt rpu rra rrb rrn rrp rrr rrt rru rta rtb rte rtn rtp rtr rtt rtu rua rub rue run rup rur rut ruu taa tab tae tan tap tar tat tau tba tbb tbe tbn tbp tbr tbt tbu te- tea teb tee ten tep ter tet teu tna tnb tne tnn tnp tnr tnt tpa tpb tpe tpn tpp tpr tpt tpu tra trb tre trn trp trr trt tru tta ttb tte ttn ttp ttr ttt ttu tua tub tue tun tup tur tut tuu ua- uaa uab uae uan uap uar uat uau uba ubb ube ubn ubp ubr ubt ubu uea ueb uee uen uep uer uet un- una unb une unn unp unr unt unu up- upa upb upe upn upp upr upt upu ur- ura urb ure urn urp urr urt uru uta utb ute utn utp utr utt utu uua uue uun uur uut uuu