a-a a-b a-i aaa aab aag aai aam aao aas ab- aba abb abg abi abm abo abs ag- aga agb agg agi agm ago ags ai- aia aib aig aii aim aio ais ama amb amg ami amm amo ams aoa aob aog aoi aom aoo aos as- asa asb asg asi asm aso ass baa bab bag bai bam bao bas bba bbb bbg bbi bbm bbo bbs bga bgb bgg bgi bgm bgo bgs bi- bia bib big bii bim bio bis bma bmb bmg bmi bmm bmo bms boa bob bog boi bom boo bos bsa bsb bsg bsi bsm bso bss gaa gab gag gai gam gao gas gba gbg gbi gbm gbo gbs gga ggb ggg ggi ggm ggo ggs gia gib gig gii gim gio gis gma gmb gmg gmi gmm gmo gms goa gob gog goi gom goo gos gsa gsb gsg gsi gsm gso gss ia- iaa iab iag iai iam iao ias iba ibb ibg ibi ibm ibo ibs iga igb igg igi igm igo igs iia iib iii iim iio iis im- ima imb img imi imm imo ims io- ioa iob iog ioi iom ioo ios is- isa isb isg isi ism iso iss m-o maa mab mag mai mam mao mas mba mbb mbg mbi mbm mbo mbs mga mgb mgi mgm mgo mgs mi- mia mib mig mii mim mio mis mma mmb mmg mmi mmm mmo mms moa mob mog moi mom moo mos msa msb msg msi msm mso mss o-i oaa oab oag oai oam oao oas ob- oba obb obg obi obm obo obs oga ogg ogi ogo ogs oia oib oii oim oio ois om- oma omb omg omi omm omo oms oo- ooa oob oog ooi oom ooo oos os- osa osb osg osi osm oso oss saa sab sag sai sam sao sas sba sbb sbg sbi sbm sbo sbs sga sgb sgg sgi sgm sgo sgs sia sib sig sii sim sio sis sma smb smg smi smm smo sms soa sob sog soi som soo sos ss- ssa ssb ssg ssi ssm sso sss