-er a-a a-i a-t aaa aae aaf aag aai aar aat aau aax aea aee aef aeg aei aer aet aeu aex af- afa afe aff afg afi afr aft afu afx ag- aga age agf agg agi agr agt agu agx ai- aia aie aif aig aii air ait aiu aix ar- ara are arf arg ari arr art aru arx at- ata ate atf atg ati atr att atu atx au- aua aue auf aug aui aur aut aux ax- axa axe axi axr axt axx eaa eae eaf eag eai ear eat eau eax eea eee eef eeg eer eet eex ef- efa efe eff efg efi efr eft efx ega ege egf egg egi egr egt egu egx eia eie eif eig eii eir eit eiu eix era ere erf erg eri err ert eru eta ete etf etg eti etr ett etu etx eu- eua eue euf eug eui eur eut eux ex- exa exe exi exr ext exu exx faa fae faf fag fai far fat fau fax fea fee fef feg fei fer fet feu fex ffa ffe fff ffg ffi ffr fft ffu ffx fga fge fgf fgg fgi fgr fgt fia fie fif fig fii fir fit fiu fix fra fre frf frg fri frr frt fru fta fte ftf ftg fti ftr ftt ftu ftx fua fue fuf fug fui fur fut fuu fux fxe fxg fxi fxr fxt fxu fxx gaa gae gaf gag gai gar gat gau ge- gea gee gef geg gei ger get geu gex gfa gfe gff gfi gfr gft gfx gga ggg ggi ggr ggt ggu gia gie gif gig gii gir git giu gra gre grf grg gri grr grt gru grx gta gte gtf gtg gti gtr gtt gtu gtx gu- gua gue guf gug gui gur gut guu gxa gxf gxt i-f ia- iaa iae iaf iag iai iar iat iau ie- iea iee ief ieg iei ier iet iex ifa ife iff ifg ifi ifr ift ifu ifx iga ige igf igg igi igr igt igu iia iie iif iii iir iit iiu iix ir- ira ire irf irg iri irr irt iru irx ita ite itf itg iti itt itu itx iu- iua iue iug iui iur iut ixe ixi ra- raa rae raf rag rai rar rat rau rax re- rea ree ref reg rei rer ret reu rex rfa rfe rff rfg rfi rfr rft rfu rga rge rgf rgg rgi rgr rgt rgx ria rie rif rig rii rir rit rix rra rrf rrg rri rrr rrt rru rta rte rtf rtg rti rtr rtt rtu rtx rua rue ruf rug rui rur rut ruu rux rxr t-x taa tae taf tag tai tar tat tau tax te- tea tee tef teg tei ter tet teu tex tfa tfe tff tfg tfi tfr tft tfu tfx tga tge tgf tgg tgi tgr tgt tgu tia tie tif tig tii tir tit tiu tix tra tre trf trg tri trr trt tru trx tta tte ttf ttg tti ttr ttt ttu ttx tua tue tuf tug tui tur tut tuu tux txe txf txi txt txu ua- uaa uae uaf uag uai uar uat uau uea uee uef ueg uei uer uet ufa ufe uff ufg ufi ufr uft ufu ufx uga uge ugf ugg ugi ugr ugt ugu ugx uia uie uif uig uii uir uit uiu ur- ura ure urf urg uri urr urt uru urx uta ute utf uti utr utt utu utx uua uue uug uur uut uuu uxf uxr uxt uxu xaa xaf xag xar xat xau xee xeg xer xet xeu xex xfa xfe xft xfx xge xgi xia xie xii xit xiu xix xrf xrt xrx xtf xti xtr xtx xue xui xxi xxx