-ic c-- ccc cce ccf cci cco ccs cct ce- cec cee cef cei ceo ces cet cfc cfe cff cfi cfo cfs cft ci- cic cie cif cii cio cis cit co- coc coe cof coi coo cos cot csc cse csf csi cso css cst ctc cte ctf cti cto cts ctt ec- ecc ece ecf eci eco ecs ect eec eee eef eeo ees eet ef- efc efe eff efi efo efs eft eic eie eif eii eio eis eit eo- eoc eoe eof eoi eoo eos eot es- esc ese esf esi eso ess est etc ete etf eti eto ets ett fcc fce fcf fci fco fcs fct fec fee fef fei feo fes fet ffc ffe fff ffi ffo ffs fft fic fie fif fii fis fit foc foe fof foi foo fos fot fsc fse fsf fsi fso fss fst ftc fte ftf fti fto fts ftt i-f icc ice icf ici ico ics ict ie- iec iee ief iei ies iet ifc ife iff ifi ifo ifs ift iic iie iif iii iio iis iit io- ioc ioe iof ioi ioo ios iot is- isc ise isf isi iso iss ist itc ite itf iti ito its itt o-i oc- occ ocf oci oco ocs oct oec oee oef oei oeo oes oet of- ofc ofe off ofi ofo ofs oft oic oie oif oii oio ois oit oo- ooc oof ooi ooo oos oot os- osc ose osf osi oso oss ost ot- otc ote otf oti oto ots ott scc sce scf sci sco scs sct se- sec see sef sei seo ses set sfc sfe sff sfi sfo sfs sft sic sie sif sii sio sis sit soc soe sof soi soo sos sot ss- ssc sse ssf ssi sso sss sst stc ste stf sti sto sts stt tcc tce tcf tci tco tcs tct te- tec tee tef tei teo tes tet tfc tfe tff tfi tfo tfs tft tic tie tif tii tio tis tit to- toc toe tof toi too tos tot tsc tse tsf tsi tso tss tst ttc tte ttf tti tto tts ttt