a-a a-c aaa aac aam aan aao aap aar aas ac- aca acc acm acn aco acp acr acs ama amc amm amn amo amp amr ams an- ana anc anm ann ano anp anr ans aoa aoc aom aon aoo aop aor aos ap- apa apc apm apn apo app apr aps ar- ara arc arm arn aro arp arr ars as- asa asc asm asn aso asp asr ass c-- caa cac cam can cao cap car cas cca ccc ccm ccn cco ccp ccr ccs cma cmc cmm cmn cmo cmp cmr cms cn- cna cnc cnm cnn cno cnp cnr cns co- coa coc com con coo cop cor cos cpa cpc cpm cpn cpo cpp cpr cps cra crc crm crn cro crp crr crs csa csc csm csn cso csp csr css m-o m-r maa mac mam man mao map mar mas mc- mca mcc mcm mcn mco mcp mcr mcs mma mmc mmm mmn mmo mmp mmr mms mna mnc mnm mnn mno mnp mnr mns moa moc mom mon moo mop mor mos mpa mpc mpm mpn mpo mpp mpr mps mra mrc mrm mrn mro mrp mrr mrs msa msc msm msn mso msp msr mss naa nac nam nan nao nap nar nas nca ncc ncm ncn nco ncp ncr ncs nma nmc nmm nmn nmo nmp nmr nms nna nnc nnm nnn nno nnp nns no- noa noc nom non noo nop nor nos npa npc npm npn npo npp npr nps nra nrc nrm nrn nro nrp nrr nrs nsa nsc nsm nsn nso nsp nsr nss oaa oac oam oan oao oap oar oas oc- oca occ ocm ocn oco ocp ocr ocs om- oma omc omm omn omo omp omr oms on- ona onc onn ono onp onr ons oo- ooa ooc oom oon ooo oop oor oos op- opa opc opm opn opo opp opr ops or- ora orc orm orn oro orp orr ors os- osa osc osm osn oso osp osr oss p-p paa pac pam pan pao pap par pas pca pcc pcm pcn pco pcp pcr pcs pma pmc pmm pmn pmo pmp pmr pms pn- pna pnc pnm pnn pno pnp pnr pns poa poc pom pon poo pop por pos ppa ppc ppm ppn ppo ppp ppr pps pra prc prm prn pro prp prr prs ps- psa psc psm psn pso psp psr pss ra- raa rac ram ran rao rap rar ras rca rcc rcm rcn rco rcp rcr rcs rma rmc rmm rmn rmo rmp rmr rms rna rnc rnm rnn rno rnp rnr rns roa roc rom ron roo rop ror ros rpa rpc rpm rpn rpo rpp rpr rps rra rrc rrm rrn rrp rrr rrs rsa rsc rsm rsn rso rsp rsr rss saa sac sam san sao sap sar sas sca scc scm scn sco scp scr scs sma smc smm smn smo smp smr sms sna snc snm snn sno snp snr sns soa soc som son soo sop sor sos spa spc spm spn spo spp spr sps sr- sra src srm srn sro srp srr srs ss- ssa ssc ssm ssn sso ssp ssr sss