a-a a-c a-t aaa aac aad aao aap aar aas aat ac- aca acc acd aco acp acr acs act ad- ada adc add ado adp adr ads adt aoa aoc aod aoo aop aor aos aot ap- apa apc apd apo app apr aps apt ar- ara arc ard aro arp arr ars art as- asa asc asd aso asp asr ass ast at- ata atc atd ato atp atr ats att c-- caa cac cad cao cap car cas cat cca ccc ccd cco ccp ccr ccs cct cda cdc cdd cdo cdp cdr cds cdt co- coa coc cod coo cop cor cos cot cpa cpc cpd cpo cpp cpr cps cpt cra crc crd cro crp crr crs crt csa csc csd cso csp csr css cst cta ctc ctd cto ctp ctr cts ctt daa dac dad dao dap dar das dat dca dcc dcd dco dcp dcr dcs dct dda ddc ddd ddo ddp ddr dds ddt doa doc dod doo dop dor dos dot dpa dpc dpd dpo dpp dpr dps dpt dra drc drd dro drp drr drs drt dsa dsc dsd dso dsp dsr dss dst dta dtc dtd dto dtp dtr dts dtt oaa oac oad oao oap oar oas oat oc- oca occ ocd oco ocp ocr ocs oct oda odc odd odo odp odr ods odt oo- ooa ooc ood ooo oop oor oos oot op- opa opc opd opo opp opr ops opt or- ora orc ord oro orp orr ors ort os- osa osc osd oso osp osr oss ost ot- ota otc otd oto otp otr ots ott p-p paa pac pad pao pap par pas pat pca pcc pcd pco pcp pcr pcs pct pda pdc pdd pdo pdp pdr pds pdt poa poc pod poo pop por pos pot ppa ppc ppd ppo ppp ppr pps ppt pra prc prd pro prp prr prs prt ps- psa psc psd pso psp psr pss pst pt- pta ptc ptd pto ptp ptr pts ptt ra- raa rac rad rao rap rar ras rat rca rcc rcd rco rcp rcr rcs rct rda rdc rdd rdo rdp rdr rds rdt roa roc rod roo rop ror ros rot rpa rpc rpd rpo rpp rpr rps rpt rra rrc rrd rrp rrr rrs rrt rsa rsc rsd rso rsp rsr rss rst rta rtc rtd rto rtp rtr rts rtt saa sac sad sao sap sar sas sat sca scc scd sco scp scr scs sct sda sdc sdd sdo sdp sdr sds sdt soa soc sod soo sop sor sos sot spa spc spd spo spp spr sps spt sr- sra src srd sro srp srr srs srt ss- ssa ssc ssd sso ssp ssr sss sst sta stc std sto stp str sts stt taa tac tad tao tap tar tas tat tca tcc tcd tco tcp tcr tcs tct tda tdc tdd tdo tdp tdr tds tdt to- toa toc tod too top tor tos tot tpa tpc tpd tpo tpp tpr tps tpt tra trc trd tro trp trr trs trt tsa tsc tsd tso tsp tsr tss tst tta ttc ttd tto ttp ttr tts ttt