a-a a-i a-t aaa aaf aai aao aar aas aat aau af- afa aff afi afo afr afs aft afu ai- aia aif aii aio air ais ait aiu aoa aof aoi aoo aor aos aot aou ar- ara arf ari aro arr ars art aru as- asa asf asi aso asr ass ast asu at- ata atf ati ato atr ats att atu au- aua auf aui auo aur aus aut faa faf fai fao far fas fat fau ffa fff ffi ffo ffr ffs fft ffu fia fif fii fir fis fit fiu foa fof foi foo for fos fot fou fra frf fri fro frr frs frt fru fsa fsf fsi fso fsr fss fst fsu fta ftf fti fto ftr fts ftt ftu fua fuf fui fuo fur fus fut fuu i-f ia- iaa iaf iai iao iar ias iat iau ifa iff ifi ifo ifr ifs ift ifu iia iif iii iio iir iis iit iiu io- ioa iof ioi ioo ior ios iot iou ir- ira irf iri iro irr irs irt iru is- isa isf isi iso isr iss ist isu ita itf iti ito its itt itu iu- iua iui iur ius iut o-i oaa oaf oai oao oar oas oat oau of- ofa off ofi ofo ofr ofs oft ofu oia oif oii oio oir ois oit oiu oo- ooa oof ooi ooo oor oos oot or- ora orf ori oro orr ors ort oru os- osa osf osi oso osr oss ost osu ot- ota otf oti oto otr ots ott otu ou- oua ouf oui ouo our ous out ra- raa raf rai rao rar ras rat rau rfa rff rfi rfo rfr rfs rft rfu ria rif rii rio rir ris rit roa rof roi roo ror ros rot rou rra rrf rri rrr rrs rrt rru rsa rsf rsi rso rsr rss rst rsu rta rtf rti rto rtr rts rtt rtu rua ruf rui ruo rur rus rut ruu saa saf sai sao sar sas sat sau sfa sff sfi sfo sfr sfs sft sfu sia sif sii sio sir sis sit siu soa sof soi soo sor sos sot sou sr- sra srf sri sro srr srs srt ss- ssa ssf ssi sso ssr sss sst ssu sta stf sti sto str sts stt stu sua suf sui suo sur sus sut suu taa taf tai tao tar tas tat tau tfa tff tfi tfo tfr tfs tft tfu tia tif tii tio tir tis tit tiu to- toa tof toi too tor tos tot tou tra trf tri tro trr trs trt tru tsa tsf tsi tso tsr tss tst tsu tta ttf tti tto ttr tts ttt ttu tua tuf tui tuo tur tus tut tuu ua- uaa uaf uai uao uar uas uat uau ufa uff ufi ufo ufr ufs uft ufu uia uif uii uio uir uis uit uiu uoa uoo uor uos uot ur- ura urf uri uro urr urs urt uru usa usf usi uso usr uss ust usu uta utf uti uto utr uts utt utu uua uur uus uut uuu