-er -th a-a a-b a-t aaa aab aae aaf aah aar aat aau aax ab- aba abb abe abf abh abr abt abu abx aea aeb aee aef aeh aer aet aeu aex af- afa afb afe aff afh afr aft afu afx aha ahb ahe ahf ahh ahr aht ahu ahx ar- ara arb are arf arh arr art aru arx at- ata atb ate atf ath atr att atu atx au- aua aub aue auf auh aur aut aux ax- axa axe axh axr axt axx b-u baa bab bae baf bah bar bat bau bax bba bbb bbe bbf bbh bbr bbt bbu bbx be- bea beb bee bef beh ber bet beu bex bfa bfb bfe bff bfh bfr bft bfu bfx bha bhb bhe bhf bhh bhr bht bhu bhx bra brb bre brf brh brr brt bru brx bta btb bte btf bth btr btt btu btx bua bub bue buf buh bur but buu bux bxb bxx eaa eab eae eaf eah ear eat eau eax eba ebb ebe ebf ebh ebr ebt ebu ebx eea eeb eee eef eer eet eex ef- efa efb efe eff efh efr eft efx eha ehb ehe ehf ehh ehr eht ehu era erb ere erf erh err ert eru eta etb ete etf eth etr ett etu etx eu- eua eub eue euf eur eut eux ex- exa exe exh exr ext exu exx faa fab fae faf fah far fat fau fax fba fbb fbe fbf fbh fbr fbt fbu fbx fea feb fee fef feh fer fet feu fex ffa ffe fff ffh ffr fft ffu ffx fha fhb fhe fhf fhh fhr fra frb fre frf frh frr frt fru fta ftb fte ftf fth ftr ftt ftu ftx fua fub fue fuf fur fut fuu fux fxe fxr fxt fxu fxx haa hab hae haf hah har hat hau hax hba hbb hbe hbf hbh hbr hbt hbu hbx he- hea heb hee hef heh her het heu hex hfa hfb hfe hff hfh hfr hft hfu hha hhb hhe hhf hhh hhr hht hhu hr- hra hrb hre hrf hrh hrr hrt hru hta htb hte htf hth htr htt htx hua hub hue huf huh hur hut huu hux ra- raa rab rae raf rah rar rat rau rax rba rbb rbe rbf rbh rbr rbt rbu rbx re- rea reb ree ref reh rer ret reu rex rfa rfb rfe rff rfh rfr rft rfu rh- rha rhb rhe rhf rhh rhr rht rhu rra rrb rrf rrh rrr rrt rru rta rtb rte rtf rtr rtt rtu rtx rua rub rue ruf ruh rur rut ruu rux rxr t-x taa tab tae taf tah tar tat tau tax tba tbb tbe tbf tbh tbr tbt tbu te- tea teb tee tef teh ter tet teu tex tfa tfb tfe tff tfh tfr tft tfu tfx th- tha thb the thf thh thr tht thu thx tra trb tre trf trh trr trt tru trx tta ttb tte ttf tth ttr ttt ttu ttx tua tub tue tuf tuh tur tut tuu tux txe txf txt txu ua- uaa uab uae uaf uah uar uat uau uba ubb ube ubf ubh ubr ubt ubu ubx uea ueb uee uef ueh uer uet ufa ufe uff ufh ufr uft ufu ufx uha uhb uhe uhf uhh uhr uht uhu ur- ura urb ure urf urr urt uru urx uta utb ute utf uth utr utt utu utx uua uue uur uut uuu uxb uxf uxr uxt uxu xaa xaf xar xat xau xbe xbr xbx xee xer xet xeu xex xfa xfe xfh xft xfx xht xrf xrt xrx xtf xtr xtx xue xxx