a-a a-c a-t aaa aac aak aan aap aar aas aat ac- aca acc ack acn acp acr acs act aka akc akk akn akp akr aks an- ana anc ank ann anp anr ans ant ap- apa apc apk apn app apr aps apt ar- ara arc ark arn arp arr ars art as- asa asc ask asn asp asr ass ast at- ata atc atn atp atr ats att c-- caa cac cak can cap car cas cat cca ccc cck ccn ccp ccr ccs cct cka ckc cks ckt cn- cna cnc cnn cnp cnr cns cnt cpa cpc cpk cpn cpp cpr cps cpt cra crc crk crn crp crr crs crt csa csc csk csn csp csr css cst cta ctc ctk ctn ctp ctr cts ctt k-t ka- kaa kac kak kan kap kar kas kat kca kcc kck kcn kcp kcr kcs kct kkc kkk kkn kkp kkr kks kkt kn- kna knc knk knn knp knr knt kpa kpc kpk kpn kpp kpr kps kpt kra krc krk krn krp krr krs krt ksa ksc ksk ksn ksp ksr kss kst kta ktc ktk ktn ktp ktr kts ktt naa nac nak nan nap nar nas nat nca ncc nck ncn ncp ncr ncs nct nka nkc nkk nkn nkp nkr nks nkt nna nnc nnk nnn nnp nns nnt npa npc npn npp npr nps npt nra nrc nrk nrn nrp nrr nrs nrt nsa nsc nsk nsn nsp nsr nss nst nta ntc ntk ntn ntp ntr nts ntt p-p paa pac pak pan pap par pas pat pca pcc pck pcn pcp pcr pcs pct pka pkc pkn pkp pkr pks pkt pn- pna pnc pnk pnn pnp pnr pns pnt ppa ppc ppk ppn ppp ppr pps ppt pra prc prk prn prp prr prs prt ps- psa psc psk psn psp psr pss pst pt- pta ptc ptk ptn ptp ptr pts ptt ra- raa rac rak ran rap rar ras rat rca rcc rcn rcp rcr rcs rct rkc rkk rkp rks rkt rna rnc rnn rnp rnr rns rnt rpa rpc rpk rpn rpp rpr rps rpt rra rrc rrk rrn rrp rrr rrs rrt rsa rsc rsk rsn rsp rsr rss rst rta rtc rtk rtn rtp rtr rts rtt saa sac sak san sap sar sas sat sca scc sck scn scp scr scs sct sk- ska skc skk skp skr sks skt sna snc snk snn snp snr sns snt spa spc spk spn spp spr sps spt sr- sra src srk srn srp srr srs srt ss- ssa ssc ssk ssn ssp ssr sss sst sta stc stk stn stp str sts stt taa tac tak tan tap tar tas tat tca tcc tck tcn tcp tcr tcs tct tka tkc tkk tkp tkr tks tkt tna tnc tnk tnn tnp tnr tns tnt tpa tpc tpk tpn tpp tpr tps tpt tra trc trk trn trp trr trs trt tsa tsc tsk tsn tsp tsr tss tst tta ttc ttk ttn ttp ttr tts ttt