a-a a-b a-i aaa aab aad aai aam aao ab- aba abb abd abi abm abo ad- ada adb add adi adm ado ai- aia aib aid aii aim aio ama amb amd ami amm amo aoa aob aod aoi aom aoo baa bab bad bai bam bao bba bbb bbd bbi bbm bbo bda bdb bdd bdi bdm bdo bi- bia bib bid bii bim bio bma bmb bmd bmi bmm bmo boa bob bod boi bom boo daa dab dad dai dam dao dba dbb dbd dbi dbm dbo dda ddb ddd ddi ddm ddo di- dia dib did dii dim dio dma dmb dmd dmi dmm dmo doa dob dod doi dom doo i-d ia- iaa iab iad iai iam iao iba ibb ibd ibi ibm ibo ida idb idd idi idm ido iia iib iid iii iim iio im- ima imb imd imi imm imo io- ioa iob iod ioi iom ioo m-o maa mab mad mai mam mao mba mbb mbd mbi mbm mbo mda mdb mdd mdi mdm mdo mi- mia mib mid mii mim mio mma mmb mmd mmi mmm mmo moa mob mod moi mom moo o-i oaa oab oad oai oam oao ob- oba obb obd obi obm obo oda odb odd odi odm odo oia oib oid oii oim oio om- oma omb omd omi omm omo oo- ooa oob ood ooi oom ooo