a-a a-b a-i aaa aab aad aai aam aar aas ab- aba abb abd abi abm abr abs ad- ada adb add adi adm adr ads ai- aia aib aid aii aim air ais ama amb amd ami amm amr ams ar- ara arb ard ari arm arr ars as- asa asb asd asi asm asr ass baa bab bad bai bam bar bas bba bbb bbd bbi bbm bbr bbs bda bdb bdd bdi bdm bdr bds bi- bia bib bid bii bim bir bis bma bmb bmd bmi bmm bmr bms bra brb brd bri brm brr brs bsa bsb bsd bsi bsm bsr bss daa dab dad dai dam dar das dba dbb dbd dbi dbm dbr dbs dda ddb ddd ddi ddm ddr dds di- dia dib did dii dim dir dis dma dmb dmd dmi dmm dmr dms dra drb drd dri drm drr drs dsa dsb dsd dsi dsm dsr dss i-d ia- iaa iab iad iai iam iar ias iba ibb ibd ibi ibm ibr ibs ida idb idd idi idm idr ids iia iib iid iii iim iir iis im- ima imb imd imi imm ims ir- ira irb ird iri irm irr irs is- isa isb isd isi ism isr iss m-r maa mab mad mai mam mar mas mba mbb mbd mbi mbm mbr mbs mda mdb mdd mdi mdm mdr mds mi- mia mib mid mii mim mir mis mma mmb mmd mmi mmm mmr mms mra mrb mrd mri mrm mrr mrs msa msb msd msi msm msr mss ra- raa rab rad rai ram rar ras rba rbb rbd rbi rbm rbr rbs rda rdb rdd rdi rdm rdr rds ria rib rid rii rim rir ris rma rmb rmd rmi rmm rmr rms rra rrb rrd rri rrm rrr rrs rsa rsb rsd rsi rsm rsr rss saa sab sad sai sam sar sas sba sbb sbd sbi sbm sbr sbs sda sdb sdd sdi sdm sdr sds sia sib sid sii sim sir sis sma smb smd smi smm smr sms sr- sra srb srd sri srm srr srs ss- ssa ssb ssd ssi ssm ssr sss