a-a a-c a-t aaa aac aad aan aao aap aar aat ac- aca acc acd acn aco acp acr act ad- ada adc add adn ado adp adr adt an- ana anc and ann ano anp anr ant aoa aoc aod aon aoo aop aor aot ap- apa apc apd apn apo app apr apt ar- ara arc ard arn aro arp arr art at- ata atc atd atn ato atp atr att c-- caa cac cad can cao cap car cat cca ccc ccd ccn cco ccp ccr cct cda cdc cdd cdn cdo cdp cdr cdt cn- cna cnc cnd cnn cno cnp cnr cnt co- coa coc cod con coo cop cor cot cpa cpc cpd cpn cpo cpp cpr cpt cra crc crd crn cro crp crr crt cta ctc ctd ctn cto ctp ctr ctt daa dac dad dan dao dap dar dat dca dcc dcd dcn dco dcp dcr dct dda ddc ddd ddn ddo ddp ddr ddt dna dnc dnd dnn dno dnp dnr dnt doa doc dod don doo dop dor dot dpa dpc dpd dpn dpo dpp dpr dpt dra drc drd drn dro drp drr drt dta dtc dtd dtn dto dtp dtr dtt naa nac nad nan nao nap nar nat nca ncc ncd ncn nco ncp ncr nct nda ndc ndd ndn ndo ndp ndr ndt nna nnc nnn nno nnp nnt no- noa noc nod non noo nop nor not npa npc npd npn npo npp npr npt nra nrc nrd nrn nro nrp nrr nrt nta ntc ntd ntn nto ntp ntr ntt oaa oac oad oan oao oap oar oat oc- oca occ ocd ocn oco ocp ocr oct oda odc odd odn odo odp odr odt on- ona onc ond onn ono onp onr ont oo- ooa ooc ood oon ooo oop oor oot op- opa opc opd opn opo opp opr opt or- ora orc ord orn oro orp orr ort ot- ota otc otd otn oto otp otr ott p-p paa pac pad pan pao pap par pat pca pcc pcd pcn pco pcp pcr pct pda pdc pdd pdn pdo pdp pdr pdt pn- pna pnc pnd pnn pno pnp pnr pnt poa poc pod pon poo pop por pot ppa ppc ppd ppn ppo ppp ppr ppt pra prc prd prn pro prp prr prt pt- pta ptc ptd ptn pto ptp ptr ptt ra- raa rac rad ran rao rap rar rat rca rcc rcd rcn rco rcp rcr rct rda rdc rdd rdn rdo rdp rdr rdt rna rnc rnd rnn rno rnp rnr rnt roa roc rod ron roo rop ror rot rpa rpc rpd rpn rpo rpp rpr rpt rra rrc rrd rrn rrp rrr rrt rta rtc rtd rtn rto rtp rtr rtt taa tac tad tan tao tap tar tat tca tcc tcd tcn tco tcp tcr tct tda tdc tdd tdn tdo tdp tdr tdt tna tnc tnd tnn tno tnp tnr tnt to- toa toc tod ton too top tor tot tpa tpc tpd tpn tpo tpp tpr tpt tra trc trd trn tro trp trr trt tta ttc ttd ttn tto ttp ttr ttt