-er a-a a-b a-i a-t aaa aab aae aag aai aak aan aao aar aas aat ab- aba abb abe abg abi abk abn abo abr abs abt aea aeb aee aeg aei aek aen aeo aer aes aet ag- aga agb age agg agi agk agn ago agr ags agt ai- aia aib aie aig aii aik ain aio air ais ait aka akb ake akg aki akk akn ako akr aks an- ana anb ane ang ani ank ann ano anr ans ant aoa aob aoe aog aoi aok aon aoo aor aos aot ar- ara arb are arg ari ark arn aro arr ars art as- asa asb ase asg asi ask asn aso asr ass ast at- ata atb ate atg ati atn ato atr ats att baa bab bae bag bai bak ban bao bar bas bat bba bbb bbe bbg bbi bbk bbn bbo bbr bbs bbt be- bea beb bee beg bei bek ben beo ber bes bet bga bgb bge bgg bgi bgk bgn bgo bgr bgs bgt bi- bia bib bie big bii bik bin bio bir bis bit bka bkb bke bkg bkk bkn bko bkr bks bkt bna bnb bne bng bni bnk bnn bno bnr bns bnt boa bob boe bog boi bok bon boo bor bos bot bra brb bre brg bri brk brn bro brr brs brt bsa bsb bse bsg bsi bsk bsn bso bsr bss bst bta btb bte btg bti btk btn bto btr bts btt eaa eab eae eag eai eak ean eao ear eas eat eba ebb ebe ebg ebi ebk ebn ebo ebr ebs ebt eea eeb eee eeg eek een eeo eer ees eet ega egb ege egg egi egn ego egr egs egt eia eib eie eig eii eik ein eio eir eis eit eka ekb eke ekg eki eko ekr eks ekt en- ena enb ene eng eni enk enn eno enr ens ent eo- eoa eob eoe eog eoi eok eon eoo eor eos eot era erb ere erg eri erk ern ero err ers ert es- esa esb ese esg esi esk esn eso esr ess est eta etb ete etg eti etk etn eto etr ets ett gaa gab gae gag gai gak gan gao gar gas gat gba gbe gbg gbi gbk gbn gbo gbr gbs gbt ge- gea geb gee geg gei gek gen geo ger ges get gga ggb ggg ggi ggn ggo ggr ggs ggt gia gib gie gig gii gik gin gio gir gis git gka gkb gkn gko gks gkt gna gnb gne gni gnn gno gnr gns gnt goa gob goe gog goi gok gon goo gor gos got gra grb gre grg gri grk grn gro grr grs grt gsa gsb gse gsg gsi gsk gsn gso gsr gss gst gta gtb gte gtg gti gtk gtn gto gtr gts gtt ia- iaa iab iae iag iai ian iao iar ias iat iba ibb ibe ibg ibi ibk ibn ibo ibr ibs ibt ie- iea iee ieg iei iek ien ier ies iet iga igb ige igg igi igk ign igo igr igs igt iia iib iie iii iin iio iir iis iit ika ikb ike iki ikk iko ikr iks ikt in- ina inb ine ing ini ink inn ino inr ins int io- ioa iob ioe iog ioi ion ioo ior ios iot ir- ira irb ire irg iri irk irn iro irr irs irt is- isa isb ise isg isi isk isn iso isr iss ist ita itb ite itg iti itk itn ito its itt k-t ka- kaa kab kae kag kai kak kan kao kar kas kat kba kbb kbe kbi kbk kbn kbo kbr kbs ke- kea keb kee keg kei kek ken keo ker kes ket kga kgb kgi kgo kgs kia kib kie kig kii kik kin kio kir kis kit kkb kke kki kkk kkn kkr kks kkt kn- kna kne kng kni knk knn kno knr knt koa kob koe kog koi kok kon koo kor kos kot kra krg kri krk krn kro krr krs krt ksa ksb kse ksg ksi ksk ksn kso ksr kss kst kta ktb kte ktg ktk ktn kto ktr kts ktt n-i naa nab nae nag nai nak nan nao nar nas nat nba nbb nbe nbg nbi nbk nbn nbo nbr nbs nbt ne- nea neb nee neg nei nek nen neo ner nes net nga ngb nge ngg ngi ngk ngn ngo ngs ngt nia nib nie nig nii nik nin nio nir nis nit nka nke nki nkk nkn nko nkr nks nkt nna nnb nne nng nni nnk nnn nno nns nnt no- noa nob noe nog noi nok non noo nor nos not nra nrb nre nrg nri nrk nrn nro nrr nrs nrt nsa nsb nse nsg nsi nsk nsn nso nsr nss nst nta ntb nte ntg nti ntk ntn nto ntr nts ntt o-i oaa oab oae oag oai oak oan oao oar oas oat ob- oba obb obe obg obi obk obn obo obr obs obt oea oeb oee oeg oei oen oeo oer oes oet oga oge ogg ogi ogn ogo ogs ogt oia oib oie oii oik oin oio oir ois oit oka okb oke okg oki okk oko okr oks on- ona onb one ong oni onk onn ono onr ons ont oo- ooa oob oog ooi ook oon ooo oor oos oot or- ora orb ore org ori ork orn oro orr ors ort os- osa osb ose osg osi osk osn oso osr oss ost ot- ota otb ote otg oti otk otn oto otr ots ott ra- raa rab rae rag rai rak ran rao rar ras rat rba rbb rbe rbg rbi rbk rbn rbo rbr rbs rbt re- rea reb ree reg rei rek ren reo rer res ret rga rgb rge rgg rgi rgk rgn rgo rgr rgs rgt ria rib