a-a a-i aaa aaf aai aam aan aao aap aar aas af- afa aff afi afm afn afo afp afr afs ai- aia aif aii aim ain aio aip air ais ama amf ami amm amn amo amp amr ams an- ana anf ani anm ann ano anp anr ans aoa aof aoi aom aon aoo aop aor aos ap- apa apf api apm apn apo app apr aps ar- ara arf ari arm arn aro arp arr ars as- asa asf asi asm asn aso asp asr ass faa faf fai fam fan fao fap far fas ffa fff ffi ffm ffn ffo ffp ffr ffs fia fif fii fim fin fip fir fis fma fmf fmi fmm fmn fmo fmp fmr fms fna fnf fni fnm fnn fnp fnr fns foa fof foi fom fon foo fop for fos fpa fpi fpm fpn fpo fpp fpr fps fra frf fri frm frn fro frp frr frs fsa fsf fsi fsm fsn fso fsp fsr fss i-f ia- iaa iaf iai iam ian iao iap iar ias ifa iff ifi ifm ifn ifo ifp ifr ifs iia iif iii iim iin iio iip iir iis im- ima imf imi imm imn imo imp ims in- ina inf ini inm inn ino inp inr ins io- ioa iof ioi iom ion ioo iop ior ios ipa ipf ipi ipm ipn ipo ipp ipr ips ir- ira irf iri irm irn iro irp irr irs is- isa isf isi ism isn iso isp isr iss m-f m-o m-r maa maf mai mam man mao map mar mas mfa mff mfi mfm mfn mfo mfp mfr mfs mi- mia mif mii mim min mio mip mir mis mma mmf mmi mmm mmn mmo mmp mmr mms mna mnf mni mnm mnn mno mnp mnr mns moa mof moi mom mon moo mop mor mos mpa mpf mpi mpm mpn mpo mpp mpr mps mra mrf mri mrm mrn mro mrp mrr mrs msa msf msi msm msn mso msp msr mss n-i naa naf nai nam nan nao nap nar nas nfa nff nfi nfn nfo nfp nfr nfs nia nif nii nim nin nio nip nir nis nma nmi nmm nmn nmo nmp nmr nms nna nnf nni nnm nnn nno nnp nns no- noa nof noi nom non noo nop nor nos npa npf npi npm npn npo npp npr nps nra nrf nri nrm nrn nro nrp nrr nrs nsa nsf nsi nsm nsn nso nsp nsr nss o-i oaa oaf oai oam oan oao oap oar oas of- ofa off ofi ofm ofn ofo ofp ofr ofs oia oif oii oim oin oio oip oir ois om- oma omf omi omm omn omo omp omr oms on- ona onf oni onn ono onp onr ons oo- ooa oof ooi oom oon ooo oop oor oos op- opa opf opi opm opn opo opp opr ops or- ora orf ori orm orn oro orp orr ors os- osa osf osi osm osn oso osp osr oss p-p paa paf pai pam pan pao pap par pas pfa pff pfi pfm pfn pfo pfp pfr pfs pia pif pii pim pin pio pip pir pis pma pmf pmi pmm pmn pmo pmp pmr pms pn- pna pnf pni pnm pnn pno pnp pnr pns poa pof poi pom pon poo pop por pos ppa ppf ppi ppm ppn ppo ppp ppr pps pra prf pri prm prn pro prp prr prs ps- psa psf psi psm psn pso psp psr pss ra- raa raf rai ram ran rao rap rar ras rfa rff rfi rfm rfn rfo rfp rfr rfs ria rif rii rim rin rio rip rir ris rma rmf rmi rmm rmn rmo rmp rmr rms rna rni rnm rnn rno rnp rnr rns roa rof roi rom ron roo rop ror ros rpa rpf rpi rpm rpn rpo rpp rpr rps rra rrf rri rrm rrn rrp rrr rrs rsa rsf rsi rsm rsn rso rsp rsr rss saa saf sai sam san sao sap sar sas sfa sff sfi sfm sfn sfo sfp sfr sfs sia sif sii sim sin sio sip sir sis sma smf smi smm smn smo smp smr sms sna snf sni snm snn sno snp snr sns soa sof soi som son soo sop sor sos spa spf spi spm spn spo spp spr sps sr- sra srf sri srm srn sro srp srr srs ss- ssa ssf ssi ssm ssn sso ssp ssr sss