a-a a-b aaa aab aad aam aan aar aas ab- aba abb abd abm abn abr abs ad- ada adb add adm adn adr ads ama amb amd amm amn amr ams an- ana anb and anm ann anr ans ar- ara arb ard arm arn arr ars as- asa asb asd asm asn asr ass baa bab bad bam ban bar bas bba bbb bbd bbm bbn bbr bbs bda bdb bdd bdm bdr bds bma bmb bmd bmm bmn bmr bms bna bnb bnd bnn bnr bns bra brb brd brm brn brr brs bsa bsb bsd bsm bsn bsr bss daa dab dad dam dan dar das dba dbb dbd dbm dbn dbr dbs dda ddb ddd ddm ddn ddr dds dma dmb dmd dmm dmn dmr dms dna dnb dnd dnm dnn dnr dns dra drb drd drm drn drr drs dsa dsb dsd dsm dsn dsr dss m-r maa mab mad mam man mar mas mba mbb mbd mbm mbr mbs mda mdb mdd mdm mdn mdr mds mma mmb mmd mmm mmn mmr mms mna mnb mnm mnn mnr mns mra mrb mrd mrm mrn mrr mrs msa msb msd msm msn msr mss naa nab nad nam nan nar nas nba nbb nbd nbm nbn nbr nbs nda ndb ndd ndm ndn ndr nds nma nmb nmd nmm nmn nmr nms nna nnb nnm nnn nns nra nrb nrd nrm nrn nrr nrs nsa nsb nsd nsm nsn nsr nss ra- raa rab rad ram ran rar ras rba rbb rbd rbm rbn rbr rbs rda rdb rdd rdm rdn rdr rds rma rmb rmd rmm rmn rmr rms rna rnb rnd rnm rnn rnr rns rra rrb rrd rrm rrn rrr rrs rsa rsb rsd rsm rsn rsr rss saa sab sad sam san sar sas sba sbb sbd sbm sbn sbr sbs sda sdb sdd sdm sdn sdr sds sma smb smd smm smn smr sms sna snb snd snm snn snr sns sr- sra srb srd srm srn srr srs ss- ssa ssb ssd ssm ssn ssr sss