a-a a-b a-i aaa aab aad aae aai aao aau aax ab- aba abb abd abe abi abo abu abx ad- ada adb add ade adi ado adu adx aea aeb aed aee aei aeo aeu aex ai- aia aib aid aie aii aio aiu aix aoa aob aod aoe aoi aoo aou aox au- aua aub aud aue aui auo aux ax- axa axe axi axo axx b-u baa bab bad bae bai bao bau bax bba bbb bbd bbe bbi bbo bbu bbx bda bdb bdd bde bdi bdo bdu bdx be- bea beb bed bee bei beo beu bex bi- bia bib bid bie bii bio biu bix boa bob bod boe boi boo bou box bua bub bud bue bui buo buu bux bxb bxd bxi bxo bxx daa dab dad dae dai dao dau dax dba dbb dbd dbe dbi dbo dbu dbx dda ddb ddd dde ddi ddo ddu ddx de- dea deb ded dee dei deo deu dex di- dia dib did die dii dio diu dix doa dob dod doe doi doo dou dox dua dub dud due dui duo dux dxd dxi dxo dxx eaa eab ead eae eai eao eau eax eba ebb ebd ebe ebi ebo ebu ebx ed- eda edb edd ede edi edo edu edx eea eeb eed eee eeo eex eia eib eid eie eii eio eiu eix eo- eoa eob eod eoe eoi eoo eou eu- eua eub eud eue eui eux ex- exa exd exe exi exo exu exx i-d ia- iaa iab iad iae iai iao iau iba ibb ibd ibe ibi ibo ibu ibx ida idb idd ide idi ido idu idx ie- iea ied iee iei iex iia iib iid iie iii iio iiu iix io- ioa iob iod ioe ioi ioo iou iu- iua iub iud iue iui ixe ixi o-i oaa oab oad oae oai oao oau oax ob- oba obb obd obe obi obo obu obx oda odb odd ode odi odo odu oea oeb oed oee oei oeo oex oia oib oid oie oii oio oiu oo- ooa oob ood ooi ooo oox ou- oua oud oue oui ouo ox- oxa oxb oxi oxo oxx ua- uaa uab uad uae uai uao uau uba ubb ube ubi ubo ubu ubx uda udb udd ude udi udo udu udx uea ueb ued uee uei uia uib uid uie uii uio uiu uoa uob uod uoe uoo uox uua uue uuu uxb uxo uxu xaa xad xau xbe xbx xda xdb xde xdi xed xee xeu xex xia xie xii xio xiu xix xoa xod xoi xoo xox xue xui xxi xxo xxx