-ic c-- ccc ccf cci cco ccp ccs cct cfc cff cfi cfo cfp cfs cft ci- cic cif cii cio cip cis cit co- coc cof coi coo cop cos cot cpc cpf cpi cpo cpp cps cpt csc csf csi cso csp css cst ctc ctf cti cto ctp cts ctt fcc fcf fci fco fcp fcs fct ffc fff ffi ffo ffp ffs fft fic fif fii fip fis fit foc fof foi foo fop fos fot fpc fpi fpo fpp fps fpt fsc fsf fsi fso fsp fss fst ftc ftf fti fto ftp fts ftt i-f icc icf ici ico icp ics ict ifc iff ifi ifo ifp ifs ift iic iif iii iio iip iis iit io- ioc iof ioi ioo iop ios iot ipc ipf ipi ipo ipp ips ipt is- isc isf isi iso isp iss ist itc itf iti ito itp its itt o-i oc- occ ocf oci oco ocp ocs oct of- ofc off ofi ofo ofp ofs oft oic oif oii oio oip ois oit oo- ooc oof ooi ooo oop oos oot op- opc opf opi opo opp ops opt os- osc osf osi oso osp oss ost ot- otc otf oti oto otp ots ott p-p pcc pcf pci pco pcp pcs pct pfc pff pfi pfo pfp pfs pft pic pif pii pio pip pis pit poc pof poi poo pop pos pot ppc ppf ppi ppo ppp pps ppt ps- psc psf psi pso psp pss pst pt- ptc ptf pti pto ptp pts ptt scc scf sci sco scp scs sct sfc sff sfi sfo sfp sfs sft sic sif sii sio sip sis sit soc sof soi soo sop sos sot spc spf spi spo spp sps spt ss- ssc ssf ssi sso ssp sss sst stc stf sti sto stp sts stt tcc tcf tci tco tcp tcs tct tfc tff tfi tfo tfp tfs tft tic tif tii tio tip tis tit to- toc tof toi too top tos tot tpc tpf tpi tpo tpp tps tpt tsc tsf tsi tso tsp tss tst ttc ttf tti tto ttp tts ttt