-ic a-a a-c a-i a-t aaa aac aad aae aai aas aat aax ac- aca acc acd ace aci acs act acx ad- ada adc add ade adi ads adt adx aea aec aed aee aei aes aet aex ai- aia aic aid aie aii ais ait aix as- asa asc asd ase asi ass ast asx at- ata atc atd ate ati ats att atx ax- axa axe axi axs axt axx c-- caa cac cad cae cai cas cat cax cca ccc ccd cce cci ccs cct ccx cda cdc cdd cde cdi cds cdt cdx ce- cea cec ced cee cei ces cet cex ci- cia cic cid cie cii cis cit cix csa csc csd cse csi css cst csx cta ctc ctd cte cti cts ctt ctx cxc cxi cxs cxt cxx daa dac dad dae dai das dat dax dca dcc dcd dce dci dcs dct dcx dda ddc ddd dde ddi dds ddt ddx de- dea dec ded dee dei des det dex di- dia dic did die dii dis dit dix dsa dsc dsd dse dsi dss dst dsx dta dtc dtd dte dti dts dtt dtx dxc dxd dxi dxs dxt dxx eaa eac ead eae eai eas eat eax ec- eca ecc ecd ece eci ecs ect ecx ed- eda edc edd ede edi eds edt edx eea eec eed eee ees eet eex eia eic eid eie eii eis eit eix es- esa esc esd ese esi ess est esx eta etc etd ete eti ets ett etx ex- exa exc exd exe exi exs ext exx i-d ia- iaa iac iad iae iai ias iat ica icc icd ice ici ics ict ida idc idd ide idi ids idt idx ie- iea iec ied iee iei ies iet iex iia iic iid iie iii iis iit iix is- isa isc isd ise isi iss ist ita itc itd ite iti its itt itx ixc ixe ixi saa sac sad sae sai sas sat sax sca scc scd sce sci scs sct scx sda sdc sdd sde sdi sds sdt se- sea sec sed see sei ses set sex sia sic sid sie sii sis sit six ss- ssa ssc ssd sse ssi sss sst ssx sta stc std ste sti sts stt stx sxc sxi sxs sxt t-x taa tac tad tae tai tas tat tax tca tcc tcd tce tci tcs tct tcx tda tdc tdd tde tdi tds tdt tdx te- tea tec ted tee tei tes tet tex tia tic tid tie tii tis tit tix tsa tsc tsd tse tsi tss tst tsx tta ttc ttd tte tti tts ttt ttx txe txi txs txt xaa xac xad xas xat xcd xci xcx xda xdc xde xdi xds xdt xed xee xes xet xex xia xic xie xii xis xit xix xsa xsc xsi xss xst xtc xti xts xtx xxi xxx