a-a a-b a-i a-t aaa aab aae aag aai aak aan aao aas aat ab- aba abb abe abg abi abk abn abo abs abt aea aeb aee aeg aei aek aen aeo aes aet ag- aga agb age agg agi agk agn ago ags agt ai- aia aib aie aig aii aik ain aio ais ait aka akb ake akg aki akk akn ako aks an- ana anb ane ang ani ank ann ano ans ant aoa aob aoe aog aoi aok aon aoo aos aot as- asa asb ase asg asi ask asn aso ass ast at- ata atb ate atg ati atn ato ats att baa bab bae bag bai bak ban bao bas bat bba bbb bbe bbg bbi bbk bbn bbo bbs bbt be- bea beb bee beg bei bek ben beo bes bet bga bgb bge bgg bgi bgk bgn bgo bgs bgt bi- bia bib bie big bii bik bin bio bis bit bka bkb bke bkg bkk bkn bko bks bkt bna bnb bne bng bni bnk bnn bno bns bnt boa bob boe bog boi bok bon boo bos bot bsa bsb bse bsg bsi bsk bsn bso bss bst bta btb bte btg bti btk btn bto bts btt eaa eab eae eag eai eak ean eao eas eat eba ebb ebe ebg ebi ebk ebn ebo ebs ebt eea eeb eee eeg eek een eeo ees eet ega egb ege egg egi egn ego egs egt eia eib eie eig eii eik ein eio eis eit eka ekb eke ekg eki eko eks ekt en- ena enb ene eng eni enk enn eno ens ent eo- eoa eob eoe eog eoi eok eon eoo eos eot es- esa esb ese esg esi esk esn eso ess est eta etb ete etg eti etk etn eto ets ett gaa gab gae gag gai gak gan gao gas gat gba gbe gbg gbi gbk gbn gbo gbs gbt ge- gea geb gee geg gei gek gen geo ges get gga ggb ggg ggi ggn ggo ggs ggt gia gib gie gig gii gik gin gio gis git gka gkb gkn gko gks gkt gna gnb gne gni gnn gno gns gnt goa gob goe gog goi gok gon goo gos got gsa gsb gse gsg gsi gsk gsn gso gss gst gta gtb gte gtg gti gtk gtn gto gts gtt ia- iaa iab iae iag iai ian iao ias iat iba ibb ibe ibg ibi ibk ibn ibo ibs ibt ie- iea iee ieg iei iek ien ies iet iga igb ige igg igi igk ign igo igs igt iia iib iie iii iin iio iis iit ika ikb ike iki ikk iko iks ikt in- ina inb ine ing ini ink inn ino ins int io- ioa iob ioe iog ioi ion ioo ios iot is- isa isb ise isg isi isk isn iso iss ist ita itb ite itg iti itk itn ito its itt k-t ka- kaa kab kae kag kai kak kan kao kas kat kba kbb kbe kbi kbk kbn kbo kbs ke- kea keb kee keg kei kek ken keo kes ket kga kgb kgi kgo kgs kia kib kie kig kii kik kin kio kis kit kkb kke kki kkk kkn kks kkt kn- kna kne kng kni knk knn kno knt koa kob koe kog koi kok kon koo kos kot ksa ksb kse ksg ksi ksk ksn kso kss kst kta ktb kte ktg ktk ktn kto kts ktt n-i naa nab nae nag nai nak nan nao nas nat nba nbb nbe nbg nbi nbk nbn nbo nbs nbt ne- nea neb nee neg nei nek nen neo nes net nga ngb nge ngg ngi ngk ngn ngo ngs ngt nia nib nie nig nii nik nin nio nis nit nka nke nki nkk nkn nko nks nkt nna nnb nne nng nni nnk nnn nno nns nnt no- noa nob noe nog noi nok non noo nos not nsa nsb nse nsg nsi nsk nsn nso nss nst nta ntb nte ntg nti ntk ntn nto nts ntt o-i oaa oab oae oag oai oak oan oao oas oat ob- oba obb obe obg obi obk obn obo obs obt oea oeb oee oeg oei oen oeo oes oet oga oge ogg ogi ogn ogo ogs ogt oia oib oie oii oik oin oio ois oit oka okb oke okg oki okk oko oks on- ona onb one ong oni onk onn ono ons ont oo- ooa oob oog ooi ook oon ooo oos oot os- osa osb ose osg osi osk osn oso oss ost ot- ota otb ote otg oti otk otn oto ots ott saa sab sae sag sai sak san sao sas sat sba sbb sbe sbg sbi sbk sbn sbo sbs sbt se- sea seb see seg sei sek sen seo ses set sga sgb sge sgg sgi sgk sgn sgo sgs sgt sia sib sie sig sii sik sin sio sis sit sk- ska skb ske skg ski skk sko sks skt sna snb sne sng sni snk snn sno sns snt soa sob soe sog soi sok son soo sos sot ss- ssa ssb sse ssg ssi ssk ssn sso sss sst sta stb ste stg sti stk stn sto sts stt taa tab tae tag tai tak tan tao tas tat tba tbb tbe tbg tbi tbk tbn tbo tbs tbt te- tea teb tee teg tei tek ten teo tes tet tga tgb tge tgg tgi tgk tgn tgo tgs tgt tia tib tie tig tii tik tin tio tis tit tka tkb tke tkg tkk tko tks tkt tna tnb tne tng tni tnk tnn tno tns tnt to- toa tob toe tog toi tok ton too tos tot tsa tsb tse tsg tsi tsk tsn tso tss tst tta ttb tte ttg tti ttk ttn tto tts ttt