a-a a-c aaa aac aad aan aao aap aar ac- aca acc acd acn aco acp acr ad- ada adc add adn ado adp adr an- ana anc and ann ano anp anr aoa aoc aod aon aoo aop aor ap- apa apc apd apn apo app apr ar- ara arc ard arn aro arp arr c-- caa cac cad can cao cap car cca ccc ccd ccn cco ccp ccr cda cdc cdd cdn cdo cdp cdr cn- cna cnc cnd cnn cno cnp cnr co- coa coc cod con coo cop cor cpa cpc cpd cpn cpo cpp cpr cra crc crd crn cro crp crr daa dac dad dan dao dap dar dca dcc dcd dcn dco dcp dcr dda ddc ddd ddn ddo ddp ddr dna dnc dnd dnn dno dnp dnr doa doc dod don doo dop dor dpa dpc dpd dpn dpo dpp dpr dra drc drd drn dro drp drr naa nac nad nan nao nap nar nca ncc ncd ncn nco ncp ncr nda ndc ndd ndn ndo ndp ndr nna nnc nnn nno nnp no- noa noc nod non noo nop nor npa npc npd npn npo npp npr nra nrc nrd nrn nro nrp nrr oaa oac oad oan oao oap oar oc- oca occ ocd ocn oco ocp ocr oda odc odd odn odo odp odr on- ona onc ond onn ono onp onr oo- ooa ooc ood oon ooo oop oor op- opa opc opd opn opo opp opr or- ora orc ord orn oro orp orr p-p paa pac pad pan pao pap par pca pcc pcd pcn pco pcp pcr pda pdc pdd pdn pdo pdp pdr pn- pna pnc pnd pnn pno pnp pnr poa poc pod pon poo pop por ppa ppc ppd ppn ppo ppp ppr pra prc prd prn pro prp prr ra- raa rac rad ran rao rap rar rca rcc rcd rcn rco rcp rcr rda rdc rdd rdn rdo rdp rdr rna rnc rnd rnn rno rnp rnr roa roc rod ron roo rop ror rpa rpc rpd rpn rpo rpp rpr rra rrc rrd rrn rrp rrr