a-a a-c aaa aac aam aan aao aap aar ac- aca acc acm acn aco acp acr ama amc amm amn amo amp amr an- ana anc anm ann ano anp anr aoa aoc aom aon aoo aop aor ap- apa apc apm apn apo app apr ar- ara arc arm arn aro arp arr c-- caa cac cam can cao cap car cca ccc ccm ccn cco ccp ccr cma cmc cmm cmn cmo cmp cmr cn- cna cnc cnm cnn cno cnp cnr co- coa coc com con coo cop cor cpa cpc cpm cpn cpo cpp cpr cra crc crm crn cro crp crr m-o m-r maa mac mam man mao map mar mc- mca mcc mcm mcn mco mcp mcr mma mmc mmm mmn mmo mmp mmr mna mnc mnm mnn mno mnp mnr moa moc mom mon moo mop mor mpa mpc mpm mpn mpo mpp mpr mra mrc mrm mrn mro mrp mrr naa nac nam nan nao nap nar nca ncc ncm ncn nco ncp ncr nma nmc nmm nmn nmo nmp nmr nna nnc nnm nnn nno nnp no- noa noc nom non noo nop nor npa npc npm npn npo npp npr nra nrc nrm nrn nro nrp nrr oaa oac oam oan oao oap oar oc- oca occ ocm ocn oco ocp ocr om- oma omc omm omn omo omp omr on- ona onc onn ono onp onr oo- ooa ooc oom oon ooo oop oor op- opa opc opm opn opo opp opr or- ora orc orm orn oro orp orr p-p paa pac pam pan pao pap par pca pcc pcm pcn pco pcp pcr pma pmc pmm pmn pmo pmp pmr pn- pna pnc pnm pnn pno pnp pnr poa poc pom pon poo pop por ppa ppc ppm ppn ppo ppp ppr pra prc prm prn pro prp prr ra- raa rac ram ran rao rap rar rca rcc rcm rcn rco rcp rcr rma rmc rmm rmn rmo rmp rmr rna rnc rnm rnn rno rnp rnr roa roc rom ron roo rop ror rpa rpc rpm rpn rpo rpp rpr rra rrc rrm rrn rrp rrr