msh msl msm msn mso msp msr mss naa nab nae naf nah nal nam nan nao nap nar nas nba nbb nbe nbf nbl nbm nbn nbo nbp nbr nbs ne- nea neb nee nef neh nel nem nen neo nep ner nes nfa nfb nfe nff nfl nfn nfo nfp nfr nfs nha nhb nhe nhf nhh nhl nhm nhn nhp nhr nhs nla nlb nle nlf nlh nll nlm nln nlo nlp nlr nls nma nmb nme nmh nml nmm nmn nmo nmp nmr nms nna nnb nne nnf nnh nnl nnm nnn nno nnp nns no- noa nob noe nof noh nol nom non noo nop nor nos npa npb npe npf nph npl npm npn npo npp npr nps nra nrb nre nrf nrl nrm nrn nro nrp nrr nrs nsa nsb nse nsf nsh nsl nsm nsn nso nsp nsr nss oaa oab oae oaf oah oal oam oan oao oap oar oas ob- oba obb obe obf obh obl obm obn obo obp obr obs oea oeb oee oef oeh oel oem oen oeo oep oer oes of- ofa ofb ofe off ofl ofm ofn ofo ofp ofr ofs oha ohe ohf ohh ohl ohm ohn oho ohp ohr ohs ola olb ole olf oll olm oln olo olp ols om- oma omb ome omf omh oml omm omn omo omp omr oms on- ona onb one onf onh onl onn ono onp onr ons oo- ooa oob oof ooh ool oom oon ooo oop oor oos op- opa opb ope opf oph opl opm opn opo opp opr ops or- ora orb ore orf orh orl orm orn oro orp orr ors os- osa osb ose osf osh osl osm osn oso osp osr oss p-p paa pab pae paf pah pal pam pan pao pap par pas pba pbb pbe pbf pbl pbm pbn pbo pbp pbr pbs pea peb pee pef peh pel pem pen peo pep per pes pfa pfb pfe pff pfl pfm pfn pfo pfp pfr pfs pha phb phe phf phl phm phn pho php phr phs pla plb ple plf plh pll plm pln plo plp plr pls pma pmb pme pmf pmh pml pmm pmn pmo pmp pmr pms pn- pna pnb pne pnf pnh pnl pnm pnn pno pnp pnr pns poa pob poe pof poh pol pom pon poo pop por pos ppa ppb ppe ppf pph ppl ppm ppn ppo ppp ppr pps pra prb pre prf prh prl prm prn pro prp prr prs ps- psa psb pse psf psh psl psm psn pso psp psr pss ra- raa rab rae raf rah ral ram ran rao rap rar ras rba rbb rbe rbf rbh rbl rbm rbn rbo rbp rbr rbs re- rea reb ree ref reh rel rem ren reo rep rer res rfa rfb rfe rff rfh rfl rfm rfn rfo rfp rfr rfs rh- rha rhb rhe rhf rhh rhl rhm rhn rho rhp rhr rhs rla rle rlf rlh rll rlm rln rlo rlp rlr rls rma rmb rme rmf rmh rml rmm rmn rmo rmp rmr rms rna rnb rnh rnm rnn rno rnp rnr rns roa rob roe rof roh rol rom ron roo rop ror ros rpa rpb rpe rpf rph rpl rpm rpn rpo rpp rpr rps rra rrb rrf rrh rrl rrm rrn rrp rrr rrs rsa rsb rse rsf rsh rsl rsm rsn rso rsp rsr rss saa sab sae saf sah sal sam san sao sap sar sas sba sbb sbe sbf sbh sbl sbm sbn sbo sbp sbr sbs se- sea seb see sef seh sel sem sen seo sep ser ses sfa sfb sfe sff sfh sfl sfm sfn sfo sfp sfr sfs sh- sha shb she shf shh shl shm shn sho shp shr shs sla slb sle slf slh sll slm sln slo slp slr sls sma smb sme smf smh sml smm smn smo smp smr sms sna snb sne snf snl snm snn sno snp snr sns soa sob soe sof soh sol som son soo sop sor sos spa spb spe spf sph spl spm spn spo spp spr sps sr- sra srb sre srf srh srl srm srn sro srp srr srs ss- ssa ssb sse ssf ssh ssl ssm ssn sso ssp ssr sss