a-ak a-do a-ok aaaa aaad aaae aaav aada aade aaea aaev aaka aake aaoe aaoo aava adaa adad adae adak adao adda addd adde addo adea adee adeo adod adoe adok adoo aede aeka aeva akaa akae akao aked akee akka akko akok avao avda avea aveo avva avvo daad daae dada dade dado daka dake dako dava dave dddd dead deae deak deda dedd dede dedo deed deek deev dek- deka deke deva deve devo doae doak dod- doda dodd dode dodo doea doek doka doke doko dood dook dove dvda dvoa eada eadd eave edad edda edde eddo ede- edea edod edve eede eeea eeee eeka eeke eeva eka- eked ekek ekka ekoa eode eoka evae evea evoe evoo evvk kaaa kaak kad- kada kadd kade kado kadv kaeo kaka kake kakk kako kaoa kaok kava kave kavo kavv kdaa kdad kdae kdak kdao kdav kddd kddk kdka kdkd kdkk kdko kdoe kdok kdov kdva kdvv kea- kead keak keda kedd kede kedo keed keek keka keke keko keok keva keve kkaa kkda kkdd kkdo kkdv kkea kked kkkk kkoa kkoo kkov kkvv koae koak koda kode kodk kodo kodv koea koed koka koke kokk koko kook kooo koov kova kove kovk kovo kvak kvda kvea kvoa kvod kvoe kvok kvoo kvov kvvv o-eo oade oake odda oddd odea oded odeo odoo odva oedo okak oked okka okko okok ooaa ooak ooda oooo ovda ovde ovee ovo- ovod ovoo vaad vada vade vado vaka vake vava veak veda vede vedo veka veke veve vevo voad voda vode vodo voka voke vovk vvvv