a-a a-b a-i aaa aab aag aai aam aan aao aas ab- aba abb abg abi abm abn abo abs ag- aga agb agg agi agm agn ago ags ai- aia aib aig aii aim ain aio ais ama amb amg ami amm amn amo ams an- ana anb ang ani anm ann ano ans aoa aob aog aoi aom aon aoo aos as- asa asb asg asi asm asn aso ass baa bab bag bai bam ban bao bas bba bbb bbg bbi bbm bbn bbo bbs bga bgb bgg bgi bgm bgn bgo bgs bi- bia bib big bii bim bin bio bis bma bmb bmg bmi bmm bmn bmo bms bna bnb bng bni bnn bno bns boa bob bog boi bom bon boo bos bsa bsb bsg bsi bsm bsn bso bss gaa gab gag gai gam gan gao gas gba gbg gbi gbm gbn gbo gbs gga ggb ggg ggi ggm ggn ggo ggs gia gib gig gii gim gin gio gis gma gmb gmg gmi gmm gmn gmo gms gna gnb gni gnm gnn gno gns goa gob gog goi gom gon goo gos gsa gsb gsg gsi gsm gsn gso gss ia- iaa iab iag iai iam ian iao ias iba ibb ibg ibi ibm ibn ibo ibs iga igb igg igi igm ign igo igs iia iib iii iim iin iio iis im- ima imb img imi imm imn imo ims in- ina inb ing ini inm inn ino ins io- ioa iob iog ioi iom ion ioo ios is- isa isb isg isi ism isn iso iss m-o maa mab mag mai mam man mao mas mba mbb mbg mbi mbm mbo mbs mga mgb mgi mgm mgn mgo mgs mi- mia mib mig mii mim min mio mis mma mmb mmg mmi mmm mmn mmo mms mna mnb mng mni mnm mnn mno mns moa mob mog moi mom mon moo mos msa msb msg msi msm msn mso mss n-i naa nab nag nai nam nan nao nas nba nbb nbg nbi nbm nbn nbo nbs nga ngb ngg ngi ngm ngn ngo ngs nia nib nig nii nim nin nio nis nma nmb nmg nmi nmm nmn nmo nms nna nnb nng nni nnm nnn nno nns no- noa nob nog noi nom non noo nos nsa nsb nsg nsi nsm nsn nso nss o-i oaa oab oag oai oam oan oao oas ob- oba obb obg obi obm obn obo obs oga ogg ogi ogn ogo ogs oia oib oii oim oin oio ois om- oma omb omg omi omm omn omo oms on- ona onb ong oni onn ono ons oo- ooa oob oog ooi oom oon ooo oos os- osa osb osg osi osm osn oso oss saa sab sag sai sam san sao sas sba sbb sbg sbi sbm sbn sbo sbs sga sgb sgg sgi sgm sgn sgo sgs sia sib sig sii sim sin sio sis sma smb smg smi smm smn smo sms sna snb sng sni snm snn sno sns soa sob sog soi som son soo sos ss- ssa ssb ssg ssi ssm ssn sso sss