-er -up a-a a-b a-t aaa aab aae aak aao aap aar aat aau ab- aba abb abe abk abo abp abr abt abu aea aeb aee aek aeo aep aer aet aeu aka akb ake akk ako akp akr aku aoa aob aoe aok aoo aop aor aot aou ap- apa apb ape apk apo app apr apt apu ar- ara arb are ark aro arp arr art aru at- ata atb ate ato atp atr att atu au- aua aub aue auk auo aup aur aut b-p b-u baa bab bae bak bao bap bar bat bau bba bbb bbe bbk bbo bbp bbr bbt bbu be- bea beb bee bek beo bep ber bet beu bka bkb bke bkk bko bkp bkr bkt boa bob boe bok boo bop bor bot bou bpa bpb bpe bpo bpp bpr bpt bpu bra brb bre brk bro brp brr brt bru bta btb bte btk bto btp btr btt btu bua bub bue buk buo bup bur but buu eaa eab eae eak eao eap ear eat eau eba ebb ebe ebk ebo ebp ebr ebt ebu eea eeb eee eek eeo eep eer eet eka ekb eke eko ekp ekr ekt eku eo- eoa eob eoe eok eoo eop eor eot eou ep- epa epb epe epo epp epr ept epu era erb ere erk ero erp err ert eru eta etb ete etk eto etp etr ett etu eu- eua eub eue eup eur eut k-t ka- kaa kab kae kak kao kap kar kat kau kba kbb kbe kbk kbo kbp kbr kbu ke- kea keb kee kek keo kep ker ket kkb kke kkk kkp kkr kkt kku koa kob koe kok koo kop kor kot kou kpa kpe kpk kpo kpp kpr kpt kpu kra krk kro krp krr krt kru kta ktb kte ktk kto ktp ktr ktt ktu kub kue kuk kup kur kut kuu oaa oab oae oak oao oap oar oat oau ob- oba obb obe obk obo obp obr obt obu oea oeb oee oeo oep oer oet oka okb oke okk oko okp okr oku oo- ooa oob ook ooo oop oor oot op- opa opb ope opk opo opp opr opt or- ora orb ore ork oro orp orr ort oru ot- ota otb ote otk oto otp otr ott otu ou- oua oue ouk ouo oup our out p-p paa pab pae pak pao pap par pat pau pba pbb pbe pbk pbo pbp pbr pbt pbu pea peb pee pek peo pep per pet peu pka pkb pke pko pkp pkr pkt pku poa pob poe pok poo pop por pot pou ppa ppb ppe ppk ppo ppp ppr ppt ppu pra prb pre prk pro prp prr prt pru pt- pta ptb pte ptk pto ptp ptr ptt ptu pua pub pue puk pup pur put puu ra- raa rab rae rak rao rap rar rat rau rba rbb rbe rbk rbo rbp rbr rbt rbu re- rea reb ree rek reo rep rer ret reu rkb rke rkk rko rkp rkt rku roa rob roe rok roo rop ror rot rou rpa rpb rpe rpk rpo rpp rpr rpt rpu rra rrb rrk rrp rrr rrt rru rta rtb rte rtk rto rtp rtr rtt rtu rua rub rue ruk ruo rup rur rut ruu taa tab tae tak tao tap tar tat tau tba tbb tbe tbk tbo tbp tbr tbt tbu te- tea teb tee tek teo tep ter tet teu tka tkb tke tkk tko tkp tkr tkt to- toa tob toe tok too top tor tot tou tpa tpb tpe tpk tpo tpp tpr tpt tpu tra trb tre trk tro trp trr trt tru tta ttb tte ttk tto ttp ttr ttt ttu tua tub tue tuk tuo tup tur tut tuu ua- uaa uab uae uak uao uap uar uat uau uba ubb ube ubk ubo ubp ubr ubt ubu uea ueb uee uep uer uet uka ukb uke ukk ukp ukr uku uoa uob uoe uok uoo uop uor uot up- upa upb upe upk upo upp upr upt upu ur- ura urb ure urk uro urp urr urt uru uta utb ute utk uto utp utr utt utu uua uue uur uut uuu