-ic a-a a-c a-i aaa aac aaf aai aao aap aar aas ac- aca acc acf aci aco acp acr acs af- afa afc aff afi afo afp afr afs ai- aia aic aif aii aio aip air ais aoa aoc aof aoi aoo aop aor aos ap- apa apc apf api apo app apr aps ar- ara arc arf ari aro arp arr ars as- asa asc asf asi aso asp asr ass c-- caa cac caf cai cao cap car cas cca ccc ccf cci cco ccp ccr ccs cfa cfc cff cfi cfo cfp cfr cfs ci- cia cic cif cii cio cip cir cis co- coa coc cof coi coo cop cor cos cpa cpc cpf cpi cpo cpp cpr cps cra crc crf cri cro crp crr crs csa csc csf csi cso csp csr css faa fac faf fai fao fap far fas fca fcc fcf fci fco fcp fcr fcs ffa ffc fff ffi ffo ffp ffr ffs fia fic fif fii fip fir fis foa foc fof foi foo fop for fos fpa fpc fpi fpo fpp fpr fps fra frc frf fri fro frp frr frs fsa fsc fsf fsi fso fsp fsr fss i-f ia- iaa iac iaf iai iao iap iar ias ica icc icf ici ico icp icr ics ifa ifc iff ifi ifo ifp ifr ifs iia iic iif iii iio iip iir iis io- ioa ioc iof ioi ioo iop ior ios ipa ipc ipf ipi ipo ipp ipr ips ir- ira irc irf iri iro irp irr irs is- isa isc isf isi iso isp isr iss o-i oaa oac oaf oai oao oap oar oas oc- oca occ ocf oci oco ocp ocr ocs of- ofa ofc off ofi ofo ofp ofr ofs oia oic oif oii oio oip oir ois oo- ooa ooc oof ooi ooo oop oor oos op- opa opc opf opi opo opp opr ops or- ora orc orf ori oro orp orr ors os- osa osc osf osi oso osp osr oss p-p paa pac paf pai pao pap par pas pca pcc pcf pci pco pcp pcr pcs pfa pfc pff pfi pfo pfp pfr pfs pia pic pif pii pio pip pir pis poa poc pof poi poo pop por pos ppa ppc ppf ppi ppo ppp ppr pps pra prc prf pri pro prp prr prs ps- psa psc psf psi pso psp psr pss ra- raa rac raf rai rao rap rar ras rca rcc rcf rci rco rcp rcr rcs rfa rfc rff rfi rfo rfp rfr rfs ria ric rif rii rio rip rir ris roa roc rof roi roo rop ror ros rpa rpc rpf rpi rpo rpp rpr rps rra rrc rrf rri rrp rrr rrs rsa rsc rsf rsi rso rsp rsr rss saa sac saf sai sao sap sar sas sca scc scf sci sco scp scr scs sfa sfc sff sfi sfo sfp sfr sfs sia sic sif sii sio sip sir sis soa soc sof soi soo sop sor sos spa spc spf spi spo spp spr sps sr- sra src srf sri sro srp srr srs ss- ssa ssc ssf ssi sso ssp ssr sss