a-a a-b a-i aaa aab aad aai aam aao aar aas ab- aba abb abd abi abm abo abr abs ad- ada adb add adi adm ado adr ads ai- aia aib aid aii aim aio air ais ama amb amd ami amm amo amr ams aoa aob aod aoi aom aoo aor aos ar- ara arb ard ari arm aro arr ars as- asa asb asd asi asm aso asr ass baa bab bad bai bam bao bar bas bba bbb bbd bbi bbm bbo bbr bbs bda bdb bdd bdi bdm bdo bdr bds bi- bia bib bid bii bim bio bir bis bma bmb bmd bmi bmm bmo bmr bms boa bob bod boi bom boo bor bos bra brb brd bri brm bro brr brs bsa bsb bsd bsi bsm bso bsr bss daa dab dad dai dam dao dar das dba dbb dbd dbi dbm dbo dbr dbs dda ddb ddd ddi ddm ddo ddr dds di- dia dib did dii dim dio dir dis dma dmb dmd dmi dmm dmo dmr dms doa dob dod doi dom doo dor dos dra drb drd dri drm dro drr drs dsa dsb dsd dsi dsm dso dsr dss i-d ia- iaa iab iad iai iam iao iar ias iba ibb ibd ibi ibm ibo ibr ibs ida idb idd idi idm ido idr ids iia iib iid iii iim iio iir iis im- ima imb imd imi imm imo ims io- ioa iob iod ioi iom ioo ior ios ir- ira irb ird iri irm iro irr irs is- isa isb isd isi ism iso isr iss m-o m-r maa mab mad mai mam mao mar mas mba mbb mbd mbi mbm mbo mbr mbs mda mdb mdd mdi mdm mdo mdr mds mi- mia mib mid mii mim mio mir mis mma mmb mmd mmi mmm mmo mmr mms moa mob mod moi mom moo mor mos mra mrb mrd mri mrm mro mrr mrs msa msb msd msi msm mso msr mss o-i oaa oab oad oai oam oao oar oas ob- oba obb obd obi obm obo obr obs oda odb odd odi odm odo odr ods oia oib oid oii oim oio oir ois om- oma omb omd omi omm omo omr oms oo- ooa oob ood ooi oom ooo oor oos or- ora orb ord ori orm oro orr ors os- osa osb osd osi osm oso osr oss ra- raa rab rad rai ram rao rar ras rba rbb rbd rbi rbm rbo rbr rbs rda rdb rdd rdi rdm rdo rdr rds ria rib rid rii rim rio rir ris rma rmb rmd rmi rmm rmo rmr rms roa rob rod roi rom roo ror ros rra rrb rrd rri rrm rrr rrs rsa rsb rsd rsi rsm rso rsr rss saa sab sad sai sam sao sar sas sba sbb sbd sbi sbm sbo sbr sbs sda sdb sdd sdi sdm sdo sdr sds sia sib sid sii sim sio sir sis sma smb smd smi smm smo smr sms soa sob sod soi som soo sor sos sr- sra srb srd sri srm sro srr srs ss- ssa ssb ssd ssi ssm sso ssr sss