-er -up a-a a-b a-t aaa aab aae aan aao aap aar aat aau ab- aba abb abe abn abo abp abr abt abu aea aeb aee aen aeo aep aer aet aeu an- ana anb ane ann ano anp anr ant anu aoa aob aoe aon aoo aop aor aot aou ap- apa apb ape apn apo app apr apt apu ar- ara arb are arn aro arp arr art aru at- ata atb ate atn ato atp atr att atu au- aua aub aue aun auo aup aur aut b-p b-u baa bab bae ban bao bap bar bat bau bba bbb bbe bbn bbo bbp bbr bbt bbu be- bea beb bee ben beo bep ber bet beu bna bnb bne bnn bno bnp bnr bnt bnu boa bob boe bon boo bop bor bot bou bpa bpb bpe bpn bpo bpp bpr bpt bpu bra brb bre brn bro brp brr brt bru bta btb bte btn bto btp btr btt btu bua bub bue bun buo bup bur but buu eaa eab eae ean eao eap ear eat eau eba ebb ebe ebn ebo ebp ebr ebt ebu eea eeb eee een eeo eep eer eet en- ena enb ene enn eno enp enr ent enu eo- eoa eob eoe eon eoo eop eor eot eou ep- epa epb epe epn epo epp epr ept epu era erb ere ern ero erp err ert eru eta etb ete etn eto etp etr ett etu eu- eua eub eue eun eup eur eut naa nab nae nan nao nap nar nat nau nba nbb nbe nbn nbo nbp nbr nbt nbu ne- nea neb nee nen neo nep ner net neu nna nnb nne nnn nno nnp nnt nnu no- noa nob noe non noo nop nor not nou npa npb npe npn npo npp npr npt npu nra nrb nre nrn nro nrp nrr nrt nru nta ntb nte ntn nto ntp ntr ntt ntu nua nub nue nun nuo nup nur nut nuu oaa oab oae oan oao oap oar oat oau ob- oba obb obe obn obo obp obr obt obu oea oeb oee oen oeo oep oer oet on- ona onb one onn ono onp onr ont onu oo- ooa oob oon ooo oop oor oot op- opa opb ope opn opo opp opr opt or- ora orb ore orn oro orp orr ort oru ot- ota otb ote otn oto otp otr ott otu ou- oua oue oun ouo oup our out p-p paa pab pae pan pao pap par pat pau pba pbb pbe pbn pbo pbp pbr pbt pbu pea peb pee pen peo pep per pet peu pn- pna pnb pne pnn pno pnp pnr pnt pnu poa pob poe pon poo pop por pot pou ppa ppb ppe ppn ppo ppp ppr ppt ppu pra prb pre prn pro prp prr prt pru pt- pta ptb pte ptn pto ptp ptr ptt ptu pua pub pue pun pup pur put puu ra- raa rab rae ran rao rap rar rat rau rba rbb rbe rbn rbo rbp rbr rbt rbu re- rea reb ree ren reo rep rer ret reu rna rnb rnn rno rnp rnr rnt rnu roa rob roe ron roo rop ror rot rou rpa rpb rpe rpn rpo rpp rpr rpt rpu rra rrb rrn rrp rrr rrt rru rta rtb rte rtn rto rtp rtr rtt rtu rua rub rue run ruo rup rur rut ruu taa tab tae tan tao tap tar tat tau tba tbb tbe tbn tbo tbp tbr tbt tbu te- tea teb tee ten teo tep ter tet teu tna tnb tne tnn tno tnp tnr tnt to- toa tob toe ton too top tor tot tou tpa tpb tpe tpn tpo tpp tpr tpt tpu tra trb tre trn tro trp trr trt tru tta ttb tte ttn tto ttp ttr ttt ttu tua tub tue tun tuo tup tur tut tuu ua- uaa uab uae uan uao uap uar uat uau uba ubb ube ubn ubo ubp ubr ubt ubu uea ueb uee uen uep uer uet un- una unb une unn uno unp unr unt unu uoa uob uoe uon uoo uop uor uot up- upa upb upe upn upo upp upr upt upu ur- ura urb ure urn uro urp urr urt uru uta utb ute utn uto utp utr utt utu uua uue uun uur uut uuu