a-a a-i a-t aaa aaf aai aar aat aau aax af- afa aff afi afr aft afu afx ai- aia aif aii air ait aiu aix ar- ara arf ari arr art aru arx at- ata atf ati atr att atu atx au- aua auf aui aur aut aux ax- axa axi axr axt axx faa faf fai far fat fau fax ffa fff ffi ffr fft ffu ffx fia fif fii fir fit fiu fix fra frf fri frr frt fru fta ftf fti ftr ftt ftu ftx fua fuf fui fur fut fuu fux fxi fxr fxt fxu fxx i-f ia- iaa iaf iai iar iat iau ifa iff ifi ifr ift ifu ifx iia iif iii iir iit iiu iix ir- ira irf iri irr irt iru irx ita itf iti itt itu itx iu- iua iui iur iut ixi ra- raa raf rai rar rat rau rax rfa rff rfi rfr rft rfu ria rif rii rir rit rix rra rrf rri rrr rrt rru rta rtf rti rtr rtt rtu rtx rua ruf rui rur rut ruu rux rxr t-x taa taf tai tar tat tau tax tfa tff tfi tfr tft tfu tfx tia tif tii tir tit tiu tix tra trf tri trr trt tru trx tta ttf tti ttr ttt ttu ttx tua tuf tui tur tut tuu tux txf txi txt txu ua- uaa uaf uai uar uat uau ufa uff ufi ufr uft ufu ufx uia uif uii uir uit uiu ur- ura urf uri urr urt uru urx uta utf uti utr utt utu utx uua uur uut uuu uxf uxr uxt uxu xaa xaf xar xat xau xfa xft xfx xia xii xit xiu xix xrf xrt xrx xtf xti xtr xtx xui xxi xxx