a-a a-c a-t aaa aac aan aap aar aat ac- aca acc acn acp acr act an- ana anc ann anp anr ant ap- apa apc apn app apr apt ar- ara arc arn arp arr art at- ata atc atn atp atr att c-- caa cac can cap car cat cca ccc ccn ccp ccr cct cn- cna cnc cnn cnp cnr cnt cpa cpc cpn cpp cpr cpt cra crc crn crp crr crt cta ctc ctn ctp ctr ctt naa nac nan nap nar nat nca ncc ncn ncp ncr nct nna nnc nnn nnp nnt npa npc npn npp npr npt nra nrc nrn nrp nrr nrt nta ntc ntn ntp ntr ntt p-p paa pac pan pap par pat pca pcc pcn pcp pcr pct pn- pna pnc pnn pnp pnr pnt ppa ppc ppn ppp ppr ppt pra prc prn prp prr prt pt- pta ptc ptn ptp ptr ptt ra- raa rac ran rap rar rat rca rcc rcn rcp rcr rct rna rnc rnn rnp rnr rnt rpa rpc rpn rpp rpr rpt rra rrc rrn rrp rrr rrt rta rtc rtn rtp rtr rtt taa tac tan tap tar tat tca tcc tcn tcp tcr tct tna tnc tnn tnp tnr tnt tpa tpc tpn tpp tpr tpt tra trc trn trp trr trt tta ttc ttn ttp ttr ttt