a-a a-b a-i aaa aab aad aai aau aax ab- aba abb abd abi abu abx ad- ada adb add adi adu adx ai- aia aib aid aii aiu aix au- aua aub aud aui aux ax- axa axi axx b-u baa bab bad bai bau bax bba bbb bbd bbi bbu bbx bda bdb bdd bdi bdu bdx bi- bia bib bid bii biu bix bua bub bud bui buu bux bxb bxd bxi bxx daa dab dad dai dau dax dba dbb dbd dbi dbu dbx dda ddb ddd ddi ddu ddx di- dia dib did dii diu dix dua dub dud dui dux dxd dxi dxx i-d ia- iaa iab iad iai iau iba ibb ibd ibi ibu ibx ida idb idd idi idu idx iia iib iid iii iiu iix iu- iua iub iud iui ixi ua- uaa uab uad uai uau uba ubb ubi ubu ubx uda udb udd udi udu udx uia uib uid uii uiu uua uuu uxb uxu xaa xad xau xbx xda xdb xdi xia xii xiu xix xui xxi xxx