a-a a-c a-t aaa aac aan aap aar aas aat ac- aca acc acn acp acr acs act an- ana anc ann anp anr ans ant ap- apa apc apn app apr aps apt ar- ara arc arn arp arr ars art as- asa asc asn asp asr ass ast at- ata atc atn atp atr ats att c-- caa cac can cap car cas cat cca ccc ccn ccp ccr ccs cct cn- cna cnc cnn cnp cnr cns cnt cpa cpc cpn cpp cpr cps cpt cra crc crn crp crr crs crt csa csc csn csp csr css cst cta ctc ctn ctp ctr cts ctt naa nac nan nap nar nas nat nca ncc ncn ncp ncr ncs nct nna nnc nnn nnp nns nnt npa npc npn npp npr nps npt nra nrc nrn nrp nrr nrs nrt nsa nsc nsn nsp nsr nss nst nta ntc ntn ntp ntr nts ntt p-p paa pac pan pap par pas pat pca pcc pcn pcp pcr pcs pct pn- pna pnc pnn pnp pnr pns pnt ppa ppc ppn ppp ppr pps ppt pra prc prn prp prr prs prt ps- psa psc psn psp psr pss pst pt- pta ptc ptn ptp ptr pts ptt ra- raa rac ran rap rar ras rat rca rcc rcn rcp rcr rcs rct rna rnc rnn rnp rnr rns rnt rpa rpc rpn rpp rpr rps rpt rra rrc rrn rrp rrr rrs rrt rsa rsc rsn rsp rsr rss rst rta rtc rtn rtp rtr rts rtt saa sac san sap sar sas sat sca scc scn scp scr scs sct sna snc snn snp snr sns snt spa spc spn spp spr sps spt sr- sra src srn srp srr srs srt ss- ssa ssc ssn ssp ssr sss sst sta stc stn stp str sts stt taa tac tan tap tar tas tat tca tcc tcn tcp tcr tcs tct tna tnc tnn tnp tnr tns tnt tpa tpc tpn tpp tpr tps tpt tra trc trn trp trr trs trt tsa tsc tsn tsp tsr tss tst tta ttc ttn ttp ttr tts ttt