-ic a-a a-c a-i a-t aaa aac aai aap aar aas aat ac- aca acc aci acp acr acs act ai- aia aic aii aip air ais ait ap- apa apc api app apr aps apt ar- ara arc ari arp arr ars art as- asa asc asi asp asr ass ast at- ata atc ati atp atr ats att c-- caa cac cai cap car cas cat cca ccc cci ccp ccr ccs cct ci- cia cic cii cip cir cis cit cpa cpc cpi cpp cpr cps cpt cra crc cri crp crr crs crt csa csc csi csp csr css cst cta ctc cti ctp ctr cts ctt ia- iaa iac iai iap iar ias iat ica icc ici icp icr ics ict iia iic iii iip iir iis iit ipa ipc ipi ipp ipr ips ipt ir- ira irc iri irp irr irs irt is- isa isc isi isp isr iss ist ita itc iti itp its itt p-p paa pac pai pap par pas pat pca pcc pci pcp pcr pcs pct pia pic pii pip pir pis pit ppa ppc ppi ppp ppr pps ppt pra prc pri prp prr prs prt ps- psa psc psi psp psr pss pst pt- pta ptc pti ptp ptr pts ptt ra- raa rac rai rap rar ras rat rca rcc rci rcp rcr rcs rct ria ric rii rip rir ris rit rpa rpc rpi rpp rpr rps rpt rra rrc rri rrp rrr rrs rrt rsa rsc rsi rsp rsr rss rst rta rtc rti rtp rtr rts rtt saa sac sai sap sar sas sat sca scc sci scp scr scs sct sia sic sii sip sir sis sit spa spc spi spp spr sps spt sr- sra src sri srp srr srs srt ss- ssa ssc ssi ssp ssr sss sst sta stc sti stp str sts stt taa tac tai tap tar tas tat tca tcc tci tcp tcr tcs tct tia tic tii tip tir tis tit tpa tpc tpi tpp tpr tps tpt tra trc tri trp trr trs trt tsa tsc tsi tsp tsr tss tst tta ttc tti ttp ttr tts ttt