a-do aaaa aaab aaad aaar aaba aabb aabd aada aaoo aara aard aaro abaa abab abad abag abar abax abb- abba abbb abbo abbr abda abdo abgd aboa abob abod aboo abor abox abra abro adaa adab adad adag adao adar adba adda addd addo addr adob adod adog adoo ador adox adra adro ag-o agad agag agao agar agba agbo agda agga agob agod agog agoo agra agro aoba aora aorb arab arad arag arar arax arba arda ardo arga argb argo aroa arob arod aroo aror arr- arra arrg arro arrr axar axo- axoa axxo ba-x baaa baad baar baba babb babo babr bada badb badd bado badr baga bagg bago bar- bara barb bard barg baro barr barx bbad bbbb bbdd bbdo bbga bbox bbrg bd-r bdog boab boad boag boar boba bobb bobo boda bodb bodo boga bogd bogg bogo boob bood boog boor boox bor- bora bord borg boro borr boxa brab brad brag brao brax brda brdo broa brob brod brog broo bror brox brrr d-bo daab daad daag daar daba dabb dabo dada dado daga dagg dago dagr dara darb dard darg daro darr dbag dbar dddd dgbx do-x doab doar doba dobb dod- doda dodd dodg dodo dog- doga dogg dogo doob dood door dora dord doro dorr doxa draa drab drad drag drar drax drba drda drob drod drog drra dxab dxbr dxdr dxgd dxgo dxra dxrd dxrr dxrx dxxr dxxx gaar gaba gabb gabo gabr gada gadd gado gaga gagg gago gara garb gard garg garo garr gbag gbbo gddb gdor gggg goad goar goba gobo goda godo goga gogo good goog goor gora gorb gord gorg goro gorr grab grad grbr grdx grob grod grog groo gror grrr oara obad obba obbo obor obox obra obro odax odbo odda oddd odoo odor odra ogar ogb ogba ogoa ogod ogog ogra ogro ooaa ooba ooda oooo oora oord orab orad orao orar orba orbb orbo orda ordo orga orgo oro- oror orra orro oxa- oxo- oxox oxxo raab raad raag raba rabb rabo rada radd rado radr radx raga ragg rago raob rara rarb raro raxa rbbb rbbr rgba roab road roag roar rob- roba robb robo roda rodd rodo roga rogg rogo roob rood roog roor roox rora roro roxa roxo rrad rrrr xaar xado xaga xago xara xbar xbox xbra xorg xoro xoxo xrdb xrod xxxo xxxx