-ic a-a a-b a-c a-i aaa aab aac aad aai aam aao ab- aba abb abc abd abi abm abo ac- aca acb acc acd aci acm aco ad- ada adb adc add adi adm ado ai- aia aib aic aid aii aim aio ama amb amc amd ami amm amo aoa aob aoc aod aoi aom aoo baa bab bac bad bai bam bao bba bbb bbc bbd bbi bbm bbo bca bcb bcc bcd bci bcm bco bda bdb bdc bdd bdi bdm bdo bi- bia bib bic bid bii bim bio bma bmb bmc bmd bmi bmm bmo boa bob boc bod boi bom boo c-- caa cab cac cad cai cam cao cba cbb cbc cbd cbi cbm cbo cca ccb ccc ccd cci ccm cco cda cdb cdc cdd cdi cdm cdo ci- cia cib cic cid cii cim cio cma cmb cmc cmd cmi cmm cmo co- coa cob coc cod coi com coo daa dab dac dad dai dam dao dba dbb dbc dbd dbi dbm dbo dca dcb dcc dcd dci dcm dco dda ddb ddc ddd ddi ddm ddo di- dia dib dic did dii dim dio dma dmb dmc dmd dmi dmm dmo doa dob doc dod doi dom doo i-d ia- iaa iab iac iad iai iam iao iba ibb ibc ibd ibi ibm ibo ica icb icc icd ici icm ico ida idb idc idd idi idm ido iia iib iic iid iii iim iio im- ima imb imc imd imi imm imo io- ioa iob ioc iod ioi iom ioo m-o maa mab mac mad mai mam mao mba mbb mbc mbd mbi mbm mbo mc- mca mcb mcc mcd mci mcm mco mda mdb mdc mdd mdi mdm mdo mi- mia mib mic mid mii mim mio mma mmb mmc mmd mmi mmm mmo moa mob moc mod moi mom moo o-i oaa oab oac oad oai oam oao ob- oba obb obc obd obi obm obo oc- oca ocb occ ocd oci ocm oco oda odb odc odd odi odm odo oia oib oic oid oii oim oio om- oma omb omc omd omi omm omo oo- ooa oob ooc ood ooi oom ooo