a-ak aaaa aaac aaar aaca aacc aack aacr aaka aara aarc acaa acac acag acar acca accc acga acgr acr- acra acrc acrr agac agag agar agca agcc agga agra akaa akar akca akka akr- akra arac arag arak arar arc- arca arga arka arr- arra arrc arrg arrk arrr caaa caac cac- caca cacc cack cacr caga cagg cagr caka cara carc cark carr ccaa ccac ccag ccar ccca cccc ccga ccgc ccra ccrc ccrg cgac cgcc cgcg ckac ckck ckga ckrc crac crag crar crca crcc crcr crkc gaar gack gaga gagg gara garg garr gc-c gcaa gccc gcrg gggg grac grcc grrr kaaa kaag kaak kaar kacc kag- kaga kagc kagg kagr kaka kakc kakk kara karg kark karr kcaa kcac kcar kcca kccc kcck kccr kcgc kcgr kckc kckk kckr kcrc kcrg kcrr kgac kgak kgcc kgcr kgga kggg kggr kgra kgrc kgrg kgrk kgrr kkaa kkac kkag kkar kkck kkcr kkgr kkkk kkrc kkrk kkrr krac krag krak krar krca krcc krcg krka krkc krkk krkr krrc krrg krrk krrr raag raak rac- raca racc rack raga ragg raka rakk rara rark rcac rccc rcga rcgc rcrg rrrr