a-ak aaaa aaac aaad aaar aaca aacc aacd aack aacr aada aadc aaka aara aarc aard acaa acac acad acag acar acca accc accd acda acdc acga acgr ackd acr- acra acrc acrr adaa adac adad adag adak adar adcc adda addc addd addr adra agac agad agag agar agca agcc agda agga agra akaa akar akca akka akr- akra arac arad arag arak arar arc- arca arda ardc arga arka arr- arra arrc arrg arrk arrr c-cd caaa caac cac- caca cacc cack cacr cada cadc cadd cadr caga cagg cagr caka cara carc card cark carr ccaa ccac ccad ccag ccar ccca cccc ccdc ccdr ccga ccgc ccra ccrc ccrg cd-r cdaa cdac cdad cdda cddr cgac cgcc cgcg ckac ckck ckga ckrc ckrd crac crag crar crca crcc crcr crda crdc crkc daad daag daar daca dada daga dagg dagr daka dara darc dard darg dark darr dcca dccc dcra dcrk dddd ddrc dgac dgca dgka dgkd dgkg dkdc draa drac drad drag drak drar drca drda drra gaar gack gada gadd gadk gaga gagg gara gard garg garr gc-c gcaa gccc gcda gcrg gdca gdrc gggg grac grad grcc grdc grrr kaaa kaag kaak kaar kacc kacd kad- kada kadd kadr kag- kaga kagc kagg kagr kaka kakc kakk kara kard karg kark karr kcaa kcac kcad kcar kcca kccc kccd kcck kccr kcda kcdc kcdd kcdr kcgc kcgr kckc kckk kckr kcrc kcrg kcrr kdaa kdac kdad kdag kdak kdar kdca kdcc kdcd kdcr kddc kddd kddg kddk kddr kdka kdkd kdkk kdkr kgac kgak kgcc kgcd kgcr kgdc kgdd kgga kggg kggr kgra kgrc kgrd kgrg kgrk kgrr kkaa kkac kkag kkar kkcd kkck kkcr kkda kkdc kkdd kkdg kkgr kkkk kkrc kkrk kkrr krac krad krag krak krar krca krcc krcd krcg krda krdc krdd krdg krdr krka krkc krkd krkk krkr krrc krrg krrk krrr raad raag raak rac- raca racc rack rada radc radd radr raga ragg raka rakk rara rark rcac rccc rcdc rcga rcgc rcrd rcrg rdac rrad rrrr