-ic c-- ccc ccd cce ccf cci cco ccs cct ccx cdc cdd cde cdf cdi cdo cds cdt cdx ce- cec ced cee cef cei ceo ces cet cex cfc cfd cfe cff cfi cfo cfs cft cfx ci- cic cid cie cif cii cio cis cit cix co- coc cod coe cof coi coo cos cot cox csc csd cse csf csi cso css cst csx ctc ctd cte ctf cti cto cts ctt ctx cxc cxf cxi cxo cxs cxt cxx dcc dcd dce dcf dci dco dcs dct dcx ddc ddd dde ddf ddi ddo dds ddt ddx de- dec ded dee def dei deo des det dex dfc dfd dfe dff dfi dfo dfs dft dfx di- dic did die dif dii dio dis dit dix doc dod doe dof doi doo dos dot dox dsc dsd dse dsf dsi dso dss dst dsx dtc dtd dte dtf dti dto dts dtt dtx dxc dxd dxi dxo dxs dxt dxx ec- ecc ecd ece ecf eci eco ecs ect ecx ed- edc edd ede edf edi edo eds edt edx eec eed eee eef eeo ees eet eex ef- efc efd efe eff efi efo efs eft efx eic eid eie eif eii eio eis eit eix eo- eoc eod eoe eof eoi eoo eos eot es- esc esd ese esf esi eso ess est esx etc etd ete etf eti eto ets ett etx ex- exc exd exe exi exo exs ext exx fcc fcd fce fcf fci fco fcs fct fcx fdc fdd fde fdf fdi fdo fds fdt fdx fec fed fee fef fei feo fes fet fex ffc ffd ffe fff ffi ffo ffs fft ffx fic fid fie fif fii fis fit fix foc foe fof foi foo fos fot fox fsc fsd fse fsf fsi fso fss fst fsx ftc ftd fte ftf fti fto fts ftt ftx fxe fxi fxs fxt fxx i-d i-f icc icd ice icf ici ico ics ict idc idd ide idf idi ido ids idt idx ie- iec ied iee ief iei ies iet iex ifc ifd ife iff ifi ifo ifs ift ifx iic iid iie iif iii iio iis iit iix io- ioc iod ioe iof ioi ioo ios iot is- isc isd ise isf isi iso iss ist itc itd ite itf iti ito its itt itx ixc ixe ixi o-i oc- occ ocd ocf oci oco ocs oct ocx odc odd ode odf odi odo ods odt oec oed oee oef oei oeo oes oet oex of- ofc ofd ofe off ofi ofo ofs oft ofx oic oid oie oif oii oio ois oit oo- ooc ood oof ooi ooo oos oot oox os- osc osd ose osf osi oso oss ost osx ot- otc otd ote otf oti oto ots ott ox- oxc oxf oxi oxo oxt oxx scc scd sce scf sci sco scs sct scx sdc sdd sde sdf sdi sdo sds sdt se- sec sed see sef sei seo ses set sex sfc sfd sfe sff sfi sfo sfs sft sfx sic sid sie sif sii sio sis sit six soc sod soe sof soi soo sos sot sox ss- ssc ssd sse ssf ssi sso sss sst ssx stc std ste stf sti sto sts stt stx sxc sxi sxs sxt t-x tcc tcd tce tcf tci tco tcs tct tcx tdc tdd tde tdf tdi tdo tds tdt tdx te- tec ted tee tef tei teo tes tet tex tfc tfd tfe tff tfi tfo tfs tft tfx tic tid tie tif tii tio tis tit tix to- toc tod toe tof toi too tos tot tox tsc tsd tse tsf tsi tso tss tst tsx ttc ttd tte ttf tti tto tts ttt ttx txe txf txi txs txt xcd xcf xci xcx xdc xde xdf xdi xds xdt xed xee xes xet xex xfe xfs xft xfx xic xie xii xio xis xit xix xoc xod xof xoi xoo xos xot xox xsc xsi xss xst xtc xtf xti xts xtx xxi xxo xxx