-ic a-a a-b a-c a-i a-t aaa aab aac aad aae aai aan aao aas aat ab- aba abb abc abd abe abi abn abo abs abt ac- aca acb acc acd ace aci acn aco acs act ad- ada adb adc add ade adi adn ado ads adt aea aeb aec aed aee aei aen aeo aes aet ai- aia aib aic aid aie aii ain aio ais ait an- ana anb anc and ane ani ann ano ans ant aoa aob aoc aod aoe aoi aon aoo aos aot as- asa asb asc asd ase asi asn aso ass ast at- ata atb atc atd ate ati atn ato ats att baa bab bac bad bae bai ban bao bas bat bba bbb bbc bbd bbe bbi bbn bbo bbs bbt bca bcb bcc bcd bce bci bcn bco bcs bct bda bdb bdc bdd bde bdi bdo bds bdt be- bea beb bec bed bee bei ben beo bes bet bi- bia bib bic bid bie bii bin bio bis bit bna bnb bnc bnd bne bni bnn bno bns bnt boa bob boc bod boe boi bon boo bos bot bsa bsb bsc bsd bse bsi bsn bso bss bst bta btb btc btd bte bti btn bto bts btt c-- caa cab cac cad cae cai can cao cas cat cba cbb cbc cbd cbe cbi cbn cbo cbs cbt cca ccb ccc ccd cce cci ccn cco ccs cct cda cdb cdc cdd cde cdi cdn cdo cds cdt ce- cea ceb cec ced cee cei cen ceo ces cet ci- cia cib cic cid cie cii cin cio cis cit cn- cna cnb cnc cnd cne cni cnn cno cns cnt co- coa cob coc cod coe coi con coo cos cot csa csb csc csd cse csi csn cso css cst cta ctb ctc ctd cte cti ctn cto cts ctt daa dab dac dad dae dai dan dao das dat dba dbb dbc dbd dbe dbi dbn dbo dbs dbt dca dcb dcc dcd dce dci dcn dco dcs dct dda ddb ddc ddd dde ddi ddn ddo dds ddt de- dea deb dec ded dee dei den deo des det di- dia dib dic did die dii din dio dis dit dna dnb dnc dnd dne dni dnn dno dns dnt doa dob doc dod doe doi don doo dos dot dsa dsb dsc dsd dse dsi dsn dso dss dst dta dtb dtc dtd dte dti dtn dto dts dtt eaa eab eac ead eae eai ean eao eas eat eba ebb ebc ebd ebe ebi ebn ebo ebs ebt ec- eca ecb ecc ecd ece eci ecn eco ecs ect ed- eda edb edc edd ede edi edn edo eds edt eea eeb eec eed eee een eeo ees eet eia eib eic eid eie eii ein eio eis eit en- ena enb enc end ene eni enn eno ens ent eo- eoa eob eoc eod eoe eoi eon eoo eos eot es- esa esb esc esd ese esi esn eso ess est eta etb etc etd ete eti etn eto ets ett i-d ia- iaa iab iac iad iae iai ian iao ias iat iba ibb ibc ibd ibe ibi ibn ibo ibs ibt ica icb icc icd ice ici icn ico ics ict ida idb idc idd ide idi idn ido ids idt ie- iea iec ied iee iei ien ies iet iia iib iic iid iie iii iin iio iis iit in- ina inb inc ind ine ini inn ino ins int io- ioa iob ioc iod ioe ioi ion ioo ios iot is- isa isb isc isd ise isi isn iso iss ist ita itb itc itd ite iti itn ito its itt n-i naa nab nac nad nae nai nan nao nas nat nba nbb nbc nbd nbe nbi nbn nbo nbs nbt nca ncb ncc ncd nce nci ncn nco ncs nct nda ndb ndc ndd nde ndi ndn ndo nds ndt ne- nea neb nec ned nee nei nen neo nes net nia nib nic nid nie nii nin nio nis nit nna nnb nnc nne nni nnn nno nns nnt no- noa nob noc nod noe noi non noo nos not nsa nsb nsc nsd nse nsi nsn nso nss nst nta ntb ntc ntd nte nti ntn nto nts ntt o-i oaa oab oac oad oae oai oan oao oas oat ob- oba obb obc obd obe obi obn obo obs obt oc- oca ocb occ ocd oci ocn oco ocs oct oda odb odc odd ode odi odn odo ods odt oea oeb oec oed oee oei oen oeo oes oet oia oib oic oid oie oii oin oio ois oit on- ona onb onc ond one oni onn ono ons ont oo- ooa oob ooc ood ooi oon ooo oos oot os- osa osb osc osd ose osi osn oso oss ost ot- ota otb otc otd ote oti otn oto ots ott saa sab sac sad sae sai san sao sas sat sba sbb sbc sbd sbe sbi sbn sbo sbs sbt sca scb scc scd sce sci scn sco scs sct sda sdb sdc sdd sde sdi sdn sdo sds sdt se- sea seb sec sed see sei sen seo ses set sia sib sic sid sie sii sin sio sis sit sna snb snc snd sne sni snn sno sns snt soa sob soc sod soe soi son soo sos sot ss- ssa ssb ssc ssd sse ssi ssn sso sss sst sta stb stc std ste sti stn sto sts stt taa tab tac tad tae tai tan tao tas tat tba tbb tbc tbd tbe tbi tbn tbo tbs tbt tca tcb tcc tcd tce tci tcn tco tcs tct tda tdb tdc tdd tde tdi tdn tdo tds tdt te- tea teb tec ted tee tei ten teo tes tet tia tib tic tid tie tii tin tio tis tit tna