a-a a-c a-t aaa aac aan aao aap aar aas aat ac- aca acc acn aco acp acr acs act an- ana anc ann ano anp anr ans ant aoa aoc aon aoo aop aor aos aot ap- apa apc apn apo app apr aps apt ar- ara arc arn aro arp arr ars art as- asa asc asn aso asp asr ass ast at- ata atc atn ato atp atr ats att c-- caa cac can cao cap car cas cat cca ccc ccn cco ccp ccr ccs cct cn- cna cnc cnn cno cnp cnr cns cnt co- coa coc con coo cop cor cos cot cpa cpc cpn cpo cpp cpr cps cpt cra crc crn cro crp crr crs crt csa csc csn cso csp csr css cst cta ctc ctn cto ctp ctr cts ctt naa nac nan nao nap nar nas nat nca ncc ncn nco ncp ncr ncs nct nna nnc nnn nno nnp nns nnt no- noa noc non noo nop nor nos not npa npc npn npo npp npr nps npt nra nrc nrn nro nrp nrr nrs nrt nsa nsc nsn nso nsp nsr nss nst nta ntc ntn nto ntp ntr nts ntt oaa oac oan oao oap oar oas oat oc- oca occ ocn oco ocp ocr ocs oct on- ona onc onn ono onp onr ons ont oo- ooa ooc oon ooo oop oor oos oot op- opa opc opn opo opp opr ops opt or- ora orc orn oro orp orr ors ort os- osa osc osn oso osp osr oss ost ot- ota otc otn oto otp otr ots ott p-p paa pac pan pao pap par pas pat pca pcc pcn pco pcp pcr pcs pct pn- pna pnc pnn pno pnp pnr pns pnt poa poc pon poo pop por pos pot ppa ppc ppn ppo ppp ppr pps ppt pra prc prn pro prp prr prs prt ps- psa psc psn pso psp psr pss pst pt- pta ptc ptn pto ptp ptr pts ptt ra- raa rac ran rao rap rar ras rat rca rcc rcn rco rcp rcr rcs rct rna rnc rnn rno rnp rnr rns rnt roa roc ron roo rop ror ros rot rpa rpc rpn rpo rpp rpr rps rpt rra rrc rrn rrp rrr rrs rrt rsa rsc rsn rso rsp rsr rss rst rta rtc rtn rto rtp rtr rts rtt saa sac san sao sap sar sas sat sca scc scn sco scp scr scs sct sna snc snn sno snp snr sns snt soa soc son soo sop sor sos sot spa spc spn spo spp spr sps spt sr- sra src srn sro srp srr srs srt ss- ssa ssc ssn sso ssp ssr sss sst sta stc stn sto stp str sts stt taa tac tan tao tap tar tas tat tca tcc tcn tco tcp tcr tcs tct tna tnc tnn tno tnp tnr tns tnt to- toa toc ton too top tor tos tot tpa tpc tpn tpo tpp tpr tps tpt tra trc trn tro trp trr trs trt tsa tsc tsn tso tsp tsr tss tst tta ttc ttn tto ttp ttr tts ttt