-ic a-a a-b a-c a-i a-t aaa aab aac aad aai aan aao aas aat ab- aba abb abc abd abi abn abo abs abt ac- aca acb acc acd aci acn aco acs act ad- ada adb adc add adi adn ado ads adt ai- aia aib aic aid aii ain aio ais ait an- ana anb anc and ani ann ano ans ant aoa aob aoc aod aoi aon aoo aos aot as- asa asb asc asd asi asn aso ass ast at- ata atb atc atd ati atn ato ats att baa bab bac bad bai ban bao bas bat bba bbb bbc bbd bbi bbn bbo bbs bbt bca bcb bcc bcd bci bcn bco bcs bct bda bdb bdc bdd bdi bdo bds bdt bi- bia bib bic bid bii bin bio bis bit bna bnb bnc bnd bni bnn bno bns bnt boa bob boc bod boi bon boo bos bot bsa bsb bsc bsd bsi bsn bso bss bst bta btb btc btd bti btn bto bts btt c-- caa cab cac cad cai can cao cas cat cba cbb cbc cbd cbi cbn cbo cbs cbt cca ccb ccc ccd cci ccn cco ccs cct cda cdb cdc cdd cdi cdn cdo cds cdt ci- cia cib cic cid cii cin cio cis cit cn- cna cnb cnc cnd cni cnn cno cns cnt co- coa cob coc cod coi con coo cos cot csa csb csc csd csi csn cso css cst cta ctb ctc ctd cti ctn cto cts ctt daa dab dac dad dai dan dao das dat dba dbb dbc dbd dbi dbn dbo dbs dbt dca dcb dcc dcd dci dcn dco dcs dct dda ddb ddc ddd ddi ddn ddo dds ddt di- dia dib dic did dii din dio dis dit dna dnb dnc dnd dni dnn dno dns dnt doa dob doc dod doi don doo dos dot dsa dsb dsc dsd dsi dsn dso dss dst dta dtb dtc dtd dti dtn dto dts dtt i-d ia- iaa iab iac iad iai ian iao ias iat iba ibb ibc ibd ibi ibn ibo ibs ibt ica icb icc icd ici icn ico ics ict ida idb idc idd idi idn ido ids idt iia iib iic iid iii iin iio iis iit in- ina inb inc ind ini inn ino ins int io- ioa iob ioc iod ioi ion ioo ios iot is- isa isb isc isd isi isn iso iss ist ita itb itc itd iti itn ito its itt n-i naa nab nac nad nai nan nao nas nat nba nbb nbc nbd nbi nbn nbo nbs nbt nca ncb ncc ncd nci ncn nco ncs nct nda ndb ndc ndd ndi ndn ndo nds ndt nia nib nic nid nii nin nio nis nit nna nnb nnc nni nnn nno nns nnt no- noa nob noc nod noi non noo nos not nsa nsb nsc nsd nsi nsn nso nss nst nta ntb ntc ntd nti ntn nto nts ntt o-i oaa oab oac oad oai oan oao oas oat ob- oba obb obc obd obi obn obo obs obt oc- oca ocb occ ocd oci ocn oco ocs oct oda odb odc odd odi odn odo ods odt oia oib oic oid oii oin oio ois oit on- ona onb onc ond oni onn ono ons ont oo- ooa oob ooc ood ooi oon ooo oos oot os- osa osb osc osd osi osn oso oss ost ot- ota otb otc otd oti otn oto ots ott saa sab sac sad sai san sao sas sat sba sbb sbc sbd sbi sbn sbo sbs sbt sca scb scc scd sci scn sco scs sct sda sdb sdc sdd sdi sdn sdo sds sdt sia sib sic sid sii sin sio sis sit sna snb snc snd sni snn sno sns snt soa sob soc sod soi son soo sos sot ss- ssa ssb ssc ssd ssi ssn sso sss sst sta stb stc std sti stn sto sts stt taa tab tac tad tai tan tao tas tat tba tbb tbc tbd tbi tbn tbo tbs tbt tca tcb tcc tcd tci tcn tco tcs tct tda tdb tdc tdd tdi tdn tdo tds tdt tia tib tic tid tii tin tio tis tit tna tnb tnc tnd tni tnn tno tns tnt to- toa tob toc tod toi ton too tos tot tsa tsb tsc tsd tsi tsn tso tss tst tta ttb ttc ttd tti ttn tto tts ttt