a-a a-c aaa aac aad aae aau aax ac- aca acc acd ace acu acx ad- ada adc add ade adu adx aea aec aed aee aeu aex au- aua auc aud aue aux ax- axa axe axx c-- caa cac cad cae cau cax cca ccc ccd cce ccu ccx cda cdc cdd cde cdu cdx ce- cea cec ced cee ceu cex cua cuc cud cue cuu cxc cxx daa dac dad dae dau dax dca dcc dcd dce dcu dcx dda ddc ddd dde ddu ddx de- dea dec ded dee deu dex dua duc dud due dux dxc dxd dxx eaa eac ead eae eau eax ec- eca ecc ecd ece ecu ecx ed- eda edc edd ede edu edx eea eec eed eee eex eu- eua euc eud eue eux ex- exa exc exd exe exu exx ua- uaa uac uad uae uau uca ucc ucd uce ucu uda udc udd ude udu udx uea uec ued uee uua uuc uue uuu uxc uxu xaa xac xad xau xcd xcx xda xdc xde xed xee xeu xex xue xxx