-ic a-a a-b a-c a-i a-t aaa aab aac aad aae aag aai aak aao aas aat ab- aba abb abc abd abe abg abi abk abo abs abt ac- aca acb acc acd ace acg aci ack aco acs act ad- ada adb adc add ade adg adi adk ado ads adt aea aeb aec aed aee aeg aei aek aeo aes aet ag- aga agb agc agd age agg agi agk ago ags agt ai- aia aib aic aid aie aig aii aik aio ais ait aka akb akc akd ake akg aki akk ako aks aoa aob aoc aod aoe aog aoi aok aoo aos aot as- asa asb asc asd ase asg asi ask aso ass ast at- ata atb atc atd ate atg ati ato ats att baa bab bac bad bae bag bai bak bao bas bat bba bbb bbc bbd bbe bbg bbi bbk bbo bbs bbt bca bcb bcc bcd bce bcg bci bck bco bcs bct bda bdb bdc bdd bde bdg bdi bdk bdo bds bdt be- bea beb bec bed bee beg bei bek beo bes bet bga bgb bgc bgd bge bgg bgi bgk bgo bgs bgt bi- bia bib bic bid bie big bii bik bio bis bit bka bkb bkc bke bkg bkk bko bks bkt boa bob boc bod boe bog boi bok boo bos bot bsa bsb bsc bsd bse bsg bsi bsk bso bss bst bta btb btc btd bte btg bti btk bto bts btt c-- caa cab cac cad cae cag cai cak cao cas cat cba cbb cbc cbd cbe cbg cbi cbk cbo cbs cbt cca ccb ccc ccd cce ccg cci cck cco ccs cct cda cdb cdc cdd cde cdg cdi cdk cdo cds cdt ce- cea ceb cec ced cee ceg cei cek ceo ces cet cga cgb cgc cgd cge cgg cgi cgo cgs cgt ci- cia cib cic cid cie cig cii cik cio cis cit cka ckb ckc ckd cki cko cks ckt co- coa cob coc cod coe cog coi cok coo cos cot csa csb csc csd cse csg csi csk cso css cst cta ctb ctc ctd cte ctg cti ctk cto cts ctt daa dab dac dad dae dag dai dak dao das dat dba dbb dbc dbd dbe dbg dbi dbk dbo dbs dbt dca dcb dcc dcd dce dcg dci dck dco dcs dct dda ddb ddc ddd dde ddg ddi ddk ddo dds ddt de- dea deb dec ded dee deg dei dek deo des det dga dgc dgd dge dgg dgi dgk dgs dgt di- dia dib dic did die dig dii dik dio dis dit dka dkb dkc dke dkg dki dkk dko dks dkt doa dob doc dod doe dog doi dok doo dos dot dsa dsb dsc dsd dse dsg dsi dsk dso dss dst dta dtb dtc dtd dte dtg dti dtk dto dts dtt eaa eab eac ead eae eag eai eak eao eas eat eba ebb ebc ebd ebe ebg ebi ebk ebo ebs ebt ec- eca ecb ecc ecd ece ecg eci eck eco ecs ect ed- eda edb edc edd ede edg edi edk edo eds edt eea eeb eec eed eee eeg eek eeo ees eet ega egb egc egd ege egg egi ego egs egt eia eib eic eid eie eig eii eik eio eis eit eka ekb ekc ekd eke ekg eki eko eks ekt eo- eoa eob eoc eod eoe eog eoi eok eoo eos eot es- esa esb esc esd ese esg esi esk eso ess est eta etb etc etd ete etg eti etk eto ets ett g-d gaa gab gac gad gae gag gai gak gao gas gat gba gbc gbd gbe gbg gbi gbk gbo gbs gbt gca gcb gcc gcd gce gcg gci gck gco gcs gct gda gdb gdc gdd gde gdi gdk gdo gds gdt ge- gea geb gec ged gee geg gei gek geo ges get gga ggb ggc ggd ggg ggi ggo ggs ggt gia gib gic gid gie gig gii gik gio gis git gka gkb gkd gko gks gkt goa gob goc god goe gog goi gok goo gos got gsa gsb gsc gsd gse gsg gsi gsk gso gss gst gta gtb gtc gtd gte gtg gti gtk gto gts gtt i-d ia- iaa iab iac iad iae iag iai iao ias iat iba ibb ibc ibd ibe ibg ibi ibk ibo ibs ibt ica icb icc icd ice icg ici ick ico ics ict ida idb idc idd ide idg idi idk ido ids idt ie- iea iec ied iee ieg iei iek ies iet iga igb igc igd ige igg igi igk igo igs igt iia iib iic iid iie iii iio iis iit ika ikb ikc ike iki ikk iko iks ikt io- ioa iob ioc iod ioe iog ioi ioo ios iot is- isa isb isc isd ise isg isi isk iso iss ist ita itb itc itd ite itg iti itk ito its itt k-t ka- kaa kab kac kad kae kag kai kak kao kas kat kba kbb kbc kbd kbe kbi kbk kbo kbs kca kcb kcc kcd kce kcg kci kck kcs kct kda kdb kdc kde kdg kdk kdo kds kdt ke- kea keb kec ked kee keg kei kek keo kes ket kga kgb kgc kgd kgi kgo kgs kia kib kic kid kie kig kii kik kio kis kit kkb kkc kke kki kkk kks kkt koa kob koc kod koe kog koi kok koo kos kot ksa ksb ksc ksd kse ksg ksi ksk kso kss kst kta ktb ktc kte ktg ktk kto kts ktt o-i oaa oab oac oad oae oag oai oak oao oas oat ob- oba obb obc obd obe obg obi obk obo obs obt oc- oca ocb occ ocd ocg oci ock oco ocs oct oda odb odc odd ode odg odi odo