-ic a-a a-b a-c a-i aaa aab aac aag aai aam aao ab- aba abb abc abg abi abm abo ac- aca acb acc acg aci acm aco ag- aga agb agc agg agi agm ago ai- aia aib aic aig aii aim aio ama amb amc amg ami amm amo aoa aob aoc aog aoi aom aoo baa bab bac bag bai bam bao bba bbb bbc bbg bbi bbm bbo bca bcb bcc bcg bci bcm bco bga bgb bgc bgg bgi bgm bgo bi- bia bib bic big bii bim bio bma bmb bmc bmg bmi bmm bmo boa bob boc bog boi bom boo c-- caa cab cac cag cai cam cao cba cbb cbc cbg cbi cbm cbo cca ccb ccc ccg cci ccm cco cga cgb cgc cgg cgi cgm cgo ci- cia cib cic cig cii cim cio cma cmb cmc cmg cmi cmm cmo co- coa cob coc cog coi com coo gaa gab gac gag gai gam gao gba gbc gbg gbi gbm gbo gca gcb gcc gcg gci gcm gco gga ggb ggc ggg ggi ggm ggo gia gib gic gig gii gim gio gma gmb gmc gmg gmi gmm gmo goa gob goc gog goi gom goo ia- iaa iab iac iag iai iam iao iba ibb ibc ibg ibi ibm ibo ica icb icc icg ici icm ico iga igb igc igg igi igm igo iia iib iic iii iim iio im- ima imb imc img imi imm imo io- ioa iob ioc iog ioi iom ioo m-o maa mab mac mag mai mam mao mba mbb mbc mbg mbi mbm mbo mc- mca mcb mcc mcg mci mcm mco mga mgb mgc mgi mgm mgo mi- mia mib mic mig mii mim mio mma mmb mmc mmg mmi mmm mmo moa mob moc mog moi mom moo o-i oaa oab oac oag oai oam oao ob- oba obb obc obg obi obm obo oc- oca ocb occ ocg oci ocm oco oga ogc ogg ogi ogo oia oib oic oii oim oio om- oma omb omc omg omi omm omo oo- ooa oob ooc oog ooi oom ooo