-ic a-a a-c a-i a-t aaa aac aaf aai aap aas aat ac- aca acc acf aci acp acs act af- afa afc aff afi afp afs aft ai- aia aic aif aii aip ais ait ap- apa apc apf api app aps apt as- asa asc asf asi asp ass ast at- ata atc atf ati atp ats att c-- caa cac caf cai cap cas cat cca ccc ccf cci ccp ccs cct cfa cfc cff cfi cfp cfs cft ci- cia cic cif cii cip cis cit cpa cpc cpf cpi cpp cps cpt csa csc csf csi csp css cst cta ctc ctf cti ctp cts ctt faa fac faf fai fap fas fat fca fcc fcf fci fcp fcs fct ffa ffc fff ffi ffp ffs fft fia fic fif fii fip fis fit fpa fpc fpi fpp fps fpt fsa fsc fsf fsi fsp fss fst fta ftc ftf fti ftp fts ftt i-f ia- iaa iac iaf iai iap ias iat ica icc icf ici icp ics ict ifa ifc iff ifi ifp ifs ift iia iic iif iii iip iis iit ipa ipc ipf ipi ipp ips ipt is- isa isc isf isi isp iss ist ita itc itf iti itp its itt p-p paa pac paf pai pap pas pat pca pcc pcf pci pcp pcs pct pfa pfc pff pfi pfp pfs pft pia pic pif pii pip pis pit ppa ppc ppf ppi ppp pps ppt ps- psa psc psf psi psp pss pst pt- pta ptc ptf pti ptp pts ptt saa sac saf sai sap sas sat sca scc scf sci scp scs sct sfa sfc sff sfi sfp sfs sft sia sic sif sii sip sis sit spa spc spf spi spp sps spt ss- ssa ssc ssf ssi ssp sss sst sta stc stf sti stp sts stt taa tac taf tai tap tas tat tca tcc tcf tci tcp tcs tct tfa tfc tff tfi tfp tfs tft tia tic tif tii tip tis tit tpa tpc tpf tpi tpp tps tpt tsa tsc tsf tsi tsp tss tst tta ttc ttf tti ttp tts ttt