-er -up a-a a-b a-t aaa aab aae aaf aao aap aar aat aau ab- aba abb abe abf abo abp abr abt abu aea aeb aee aef aeo aep aer aet aeu af- afa afb afe aff afo afp afr aft afu aoa aob aoe aof aoo aop aor aot aou ap- apa apb ape apf apo app apr apt apu ar- ara arb are arf aro arp arr art aru at- ata atb ate atf ato atp atr att atu au- aua aub aue auf auo aup aur aut b-p b-u baa bab bae baf bao bap bar bat bau bba bbb bbe bbf bbo bbp bbr bbt bbu be- bea beb bee bef beo bep ber bet beu bfa bfb bfe bff bfo bfp bfr bft bfu boa bob boe bof boo bop bor bot bou bpa bpb bpe bpf bpo bpp bpr bpt bpu bra brb bre brf bro brp brr brt bru bta btb bte btf bto btp btr btt btu bua bub bue buf buo bup bur but buu eaa eab eae eaf eao eap ear eat eau eba ebb ebe ebf ebo ebp ebr ebt ebu eea eeb eee eef eeo eep eer eet ef- efa efb efe eff efo efp efr eft eo- eoa eob eoe eof eoo eop eor eot eou ep- epa epb epe epf epo epp epr ept epu era erb ere erf ero erp err ert eru eta etb ete etf eto etp etr ett etu eu- eua eub eue euf eup eur eut faa fab fae faf fao fap far fat fau fba fbb fbe fbf fbo fbp fbr fbt fbu fea feb fee fef feo fep fer fet feu ffa ffe fff ffo ffp ffr fft ffu foa fob foe fof foo fop for fot fou fpa fpb fpe fpo fpp fpr fpt fpu fra frb fre frf fro frp frr frt fru fta ftb fte ftf fto ftp ftr ftt ftu fua fub fue fuf fuo fup fur fut fuu oaa oab oae oaf oao oap oar oat oau ob- oba obb obe obf obo obp obr obt obu oea oeb oee oef oeo oep oer oet of- ofa ofb ofe off ofo ofp ofr oft ofu oo- ooa oob oof ooo oop oor oot op- opa opb ope opf opo opp opr opt or- ora orb ore orf oro orp orr ort oru ot- ota otb ote otf oto otp otr ott otu ou- oua oue ouf ouo oup our out p-p paa pab pae paf pao pap par pat pau pba pbb pbe pbf pbo pbp pbr pbt pbu pea peb pee pef peo pep per pet peu pfa pfb pfe pff pfo pfp pfr pft pfu poa pob poe pof poo pop por pot pou ppa ppb ppe ppf ppo ppp ppr ppt ppu pra prb pre prf pro prp prr prt pru pt- pta ptb pte ptf pto ptp ptr ptt ptu pua pub pue puf pup pur put puu ra- raa rab rae raf rao rap rar rat rau rba rbb rbe rbf rbo rbp rbr rbt rbu re- rea reb ree ref reo rep rer ret reu rfa rfb rfe rff rfo rfp rfr rft rfu roa rob roe rof roo rop ror rot rou rpa rpb rpe rpf rpo rpp rpr rpt rpu rra rrb rrf rrp rrr rrt rru rta rtb rte rtf rto rtp rtr rtt rtu rua rub rue ruf ruo rup rur rut ruu taa tab tae taf tao tap tar tat tau tba tbb tbe tbf tbo tbp tbr tbt tbu te- tea teb tee tef teo tep ter tet teu tfa tfb tfe tff tfo tfp tfr tft tfu to- toa tob toe tof too top tor tot tou tpa tpb tpe tpf tpo tpp tpr tpt tpu tra trb tre trf tro trp trr trt tru tta ttb tte ttf tto ttp ttr ttt ttu tua tub tue tuf tuo tup tur tut tuu ua- uaa uab uae uaf uao uap uar uat uau uba ubb ube ubf ubo ubp ubr ubt ubu uea ueb uee uef uep uer uet ufa ufe uff ufo ufp ufr uft ufu uoa uob uoe uoo uop uor uot up- upa upb upe upf upo upp upr upt upu ur- ura urb ure urf uro urp urr urt uru uta utb ute utf uto utp utr utt utu uua uue uur uut uuu