a-a a-b a-i aaa aab aad aae aai aam aao ab- aba abb abd abe abi abm abo ad- ada adb add ade adi adm ado aea aeb aed aee aei aem aeo ai- aia aib aid aie aii aim aio ama amb amd ame ami amm amo aoa aob aod aoe aoi aom aoo baa bab bad bae bai bam bao bba bbb bbd bbe bbi bbm bbo bda bdb bdd bde bdi bdm bdo be- bea beb bed bee bei bem beo bi- bia bib bid bie bii bim bio bma bmb bmd bme bmi bmm bmo boa bob bod boe boi bom boo daa dab dad dae dai dam dao dba dbb dbd dbe dbi dbm dbo dda ddb ddd dde ddi ddm ddo de- dea deb ded dee dei dem deo di- dia dib did die dii dim dio dma dmb dmd dme dmi dmm dmo doa dob dod doe doi dom doo eaa eab ead eae eai eam eao eba ebb ebd ebe ebi ebm ebo ed- eda edb edd ede edi edm edo eea eeb eed eee eem eeo eia eib eid eie eii eim eio em- ema emb emd eme emi emm emo eo- eoa eob eod eoe eoi eom eoo i-d ia- iaa iab iad iae iai iam iao iba ibb ibd ibe ibi ibm ibo ida idb idd ide idi idm ido ie- iea ied iee iei iem iia iib iid iie iii iim iio im- ima imb imd ime imi imm imo io- ioa iob iod ioe ioi iom ioo m-o maa mab mad mae mai mam mao mba mbb mbd mbe mbi mbm mbo mda mdb mdd mde mdi mdm mdo mea meb med mee mei mem meo mi- mia mib mid mie mii mim mio mma mmb mmd mme mmi mmm mmo moa mob mod moe moi mom moo o-i oaa oab oad oae oai oam oao ob- oba obb obd obe obi obm obo oda odb odd ode odi odm odo oea oeb oed oee oei oem oeo oia oib oid oie oii oim oio om- oma omb omd ome omi omm omo oo- ooa oob ood ooi oom ooo