a-a a-b a-i aaa aab aad aae aai aau ab- aba abb abd abe abi abu ad- ada adb add ade adi adu aea aeb aed aee aei aeu ai- aia aib aid aie aii aiu au- aua aub aud aue aui b-u baa bab bad bae bai bau bba bbb bbd bbe bbi bbu bda bdb bdd bde bdi bdu be- bea beb bed bee bei beu bi- bia bib bid bie bii biu bua bub bud bue bui buu daa dab dad dae dai dau dba dbb dbd dbe dbi dbu dda ddb ddd dde ddi ddu de- dea deb ded dee dei deu di- dia dib did die dii diu dua dub dud due dui eaa eab ead eae eai eau eba ebb ebd ebe ebi ebu ed- eda edb edd ede edi edu eea eeb eed eee eia eib eid eie eii eiu eu- eua eub eud eue eui i-d ia- iaa iab iad iae iai iau iba ibb ibd ibe ibi ibu ida idb idd ide idi idu ie- iea ied iee iei iia iib iid iie iii iiu iu- iua iub iud iue iui ua- uaa uab uad uae uai uau uba ubb ube ubi ubu uda udb udd ude udi udu uea ueb ued uee uei uia uib uid uie uii uiu uua uue uuu